It's way different - the self close shuts on it's own but it's a HARD close. Sort of banging and loud. You might want to look for a trash pull out with it's own hinges. or.. you could try Schock Metal for your glides. I got a pair of 48' slides from them and they were half of other sites. I can't remember if they have soft-close options or not.

Here is a link that might be useful: Shock Metal Site for Glides

soft close drawer slides close the same as self close until the drawer is almost to the cabinet face then it slows and gently closes. With self close slides the drawer will kind of snap to a close.

Oh, sorry I didn't get to the soft close explanation... soft close also closes on it's own once you're a few inches from the cabinet box, but it closes softly and gently. Which is nice for dishes since it won't jar them in the cabinet. And no noise : )

My heavy duty self-closing rev-a shelf trash pull out closes with a nice, solid, muffled, "thunk". No bang, and certainly not loud. I have the Blumotion on all the other drawers. I really don't notice the sound on the trash bin, I guess, because I had to get up are open and close it to make a reply to this post. If it were loud, I wouldn't have had to check first!