Best that we have had for mobility shower access. Easy to assemble.
Arrived quickly to our Ontario, Canada address.

We purchased the ShowerGlyde SG2 (Open Box version) and have been very pleased with it after 3 uses.
pros:
As others have commented, it is sturdy, stable, and slides (glydes ;-) smoothly & easily. Our toilet and tub (with shower wand) aren't together, so we're using it strictly as a tub entrance & exit device.
We're using it for a 91yo mildly arthritic stroke victim and they've gotten quickly comfortable with it --having transitioned to the SG2 from a swivel & slide competitor model (we needed the extended length of the SG2, as we're using it with a sit & stand/"Sara Stedy" transport device; the SG2 sits almost exactly at the height our Toto commode seat does, at 17" height)
The seat is a good size for our 164lb individual usage, and the cutout makes washing much easier than a solid seat (as our prior unit had); we've not used the insert, but it fits and would work fine if/when needed
I like that the leg feet aren't hard plastic and have a hard rubber feel to them
I also like that it has an optional (additional cost) swivel seat that can be ordered separately/in the future
Order processing and shipment was prompt, and packaging secure for safe shipping reciept.

cons:
none, really; it's pleasingly functional and has greatly enhanced bathing effectiveness/thoroughness with ease (and @ open box = indistinguishable-from-new price, shipping free, satisfied with the value)

neutrals:
* I wish the seat had handles attached to it, along with the option for the one at one end; it is the only slightly discomforting (new user?) factor for us with the SG2
* update: according to SolutionBased rep in an asked Question: " The legs are white coated aluminum." original: I'm concerned about the metal the white painted legs are made of, as to future corrosion potential due to perpetual moisture exposure; hopefully they're either thinner aluminum as well, or stainless steel (?)
* I'm concerned with the plastic T braces that attached the legs and handle to the rails; no way of knowing the durability of such these days, visually
* I'm concerned with the nylon-type rollers used below the seat and on the rails, again as to longevity; while perhaps they provide slight cushioning and/or noise reduction, i'd rather have found machined aluminum rollers used (especially at this price point)
* I would like to see the black plastic parts in blue (or grey); this is purely an aesthetic/cosmetic preference, nothing functional
* it would be nice for the seat to have some padding (like *cough* one competitor's); tho not padded/cushioned, it serves our main purpose adequately

Overall, 5 star purchase for us (thus far...)

We purchased the ShowerGlyde SG2 (Open Box version) and have been very pleased with it after 3 uses.
pros:
It is sturdy, stable, and slides (glydes ;-) smoothly & easily. Our toilet and tub (with shower wand) aren't together, so we're using it strictly as a tub entrance & exit device.
We're using it for a 91yo mildly arthritic stroke victim and they've gotten quickly comfortable with it --having transitioned to the SG2 from a swivel & slide competitor model (we needed the extended length of the SG2, as we're using it with a sit & stand/"Sara Stedy" transport device; the SG2 sits almost exactly at the height our Toto commode seat does, at 17" height, making it familiar to rise and sit from and to)
The seat is a good size for our 164lb individual usage, and the cutout makes washing much easier than a solid seat (as our prior unit had); we've not used the seat insert, but it fits and would work fine if/when needed
I like that the leg feet aren't hard plastic and have a hard rubber feel to them
I also like that it has an optional (additional cost) swivel seat that can be ordered separately/in the future
Order processing and shipment was prompt, and packaging secure for safe shipping receipt.

cons:
none, really; it's pleasingly functional and has greatly enhanced bathing effectiveness/thoroughness with ease (and @ open box = indistinguishable-from-new price, shipping free, satisfied with the value)

neutrals:
* I wish the seat had handles attached to it, along with the option for the one at one end; it is the only slightly discomforting (new user?) factor for us with the SG2
* update: according to SolutionBased rep in an asked Question: " The legs are white coated aluminum." original: I'm concerned about the metal the white painted legs are made of, as to future corrosion potential due to perpetual moisture exposure; hopefully they're either thinner aluminum as well, or stainless steel (?)
* I'm concerned with the plastic T braces that attached the legs and handle to the rails; no way of knowing the durability of such these days, visually
* I'm concerned with the nylon-type rollers used below the seat and on the rails, again as to longevity; while perhaps they provide slight cushioning and/or noise reduction, i'd rather have found machined aluminum rollers used (especially at this price point)
* I would like to see the black plastic parts in blue (or grey); this is purely an aesthetic/cosmetic preference, nothing functional
* it would be nice for the seat to have some padding (like *cough* one competitor's); tho not padded/cushioned, it serves our main purpose adequately

Overall, 5 star purchase for us (thus far...)

The purchase of a ShowerGlyde Model SG1 chair has changed my life for the better! As a 78-year-old, above-knee amputee, showering has long been a challenge for me, but the purchase of a ShowerGlyde chair has made it a safe, refreshing part of my day. I feel so safe on the seat on the sturdy frame and gliding the seat into the shower and back out with the easy-to-use glide system. Not having to make any major structural changes to our bathroom to make this usable was so nice. It was a delight to work with Israel and his staff as they worked with us on FaceTime to recreate our bathroom in their showroom to enable us to see that it really would work at our house. We had a totally awesome experience with SolutionBased and would highly recommend the product, company and staff.

Our occupational therapist recommended a shower transfer bench. We bought several different models. The Showerglyde is by far the best one. It slides really easily in comparison to the others and feels really solid. I wish they had a padded seat which is supposedly coming soon.