I have the suspended type and I like it. I bought it because I thought it'd be easier to clean than a tray at the bottom that could catch stuff. Not sure about all models, but mine and the one you linked to aren't soft-close. At first it felt weird to have only one cabinet that wasn't soft-close, but your brain and muscles quickly adjust.

Not really...you'll find some people swear by the one they have and how it's a better design...but those "testimonies" are for both kinds!

As to cleaning, the ones suspended will have more "dirt" around the rim of the bin, the ones on the bottom shelf will have more on the bottom.

The bins are easier to remove when on the bottom shelf (you don't have to lift the bins up as high).

Whichever one you get, be sure you get one that is full-extension. Soft-close is also nice...but if you want a foot pedal for hands-free opening, you can't have the soft-close (at least not with the Hafele foot pedals). [Note: If you have Blumotion glides (the Blum glides w/soft-close), it's easy to disable the soft-close function if you decide to get a foot pedal.]

I like the idea of the bottom shelf because if you want to change the size of a bin, you can.

I have suspended with soft close.
They work ok and I use a bag in them so the cans seldom need to be pulled out.
I think the cams are stable.

I didn't know there were options - one advantage to a bottom tray is a place to store extra bags.

I might have gone with a foot pedal version as DH is a bit OCD but when I offered to retofit he wanted to keep the soft close and thought the semi automatic would be problem downstream.

I have the Rev-a-Shelf version of the ones that sit on a frame, my parents have a single that hang from the top frame. I think they both function well. Mine is not attached to a door, it is a pull out so less chance of garbage on the back of the cabinet door.

I think the main difference in mine versus my parents is that it is easier to put a garbage bag around mine because it does not have the frame around the top. You have to fiddle around with my parents to get the bag inside the frame. No one other than me would bother with doing that in my house. Of course, the bag stays up a bit better in theirs when one of the kids tries to jam pack the garbage so they don't have to take it out. I keep extra bags inside the can, under the current bag in use, so I take it out and the next bag is right there.

My cans are in the link below. The pull out frame is very nice, very smooth, solid, was very easy to install.

Here is a link that might be useful: Rev-a-shelf garbage pull-out

Thank you so much for all your responses! Finally something about the kitchen that I don't have to be picky about!

I went back and looked at mine - and they aren't suspended but just sit on a bottom rim - but no floor - there are side rails holding them in place...