I like our superslim. I actually like the sliding mechanism and that the disc clicks in place.
As for the PS3 OS. I have to say this thing is primitive in comparison to the 360. Cluttered, poorly organized, missing what seemed like basic features or with features that are clunky in comparison (trophies). However there are good exclusives and I've got some friends who only have a PS3, so I'm glad we have it. Plus Blu-ray, of course. But I do feel now that paying for Xbox Live is worth it, just because it's a so much better designed system overall. Hopefully they'll take some queues from the Xbox for the PS4. I'm sure it's too late for the PS3.