Xperia Arc S here, from when it was "Sony Ericsson". Still working, though a bit long in the tooth now perhaps.
Not a perfect phone, but still damned fine. Dual GLONASS/GPS before the Applistas ever thought of the idea, and the ancient, replaceable battery still gets me all day if I don't hammer it. Camera's awesome for a 2011-vintage phone, pretty good even for a bleeding-edge new smartphone, and it can actually make calls while being held like a phone, unlike the iPhone 4 that it went up against.
I'll probably be getting a replacement in the next year or two, simply to take advantage of multiple cores and stupidly high-res screens (as if the current phone isn't high enough). However, this ol' Arc S still gets appreciative comments, mostly on the size and clarity of the screen. It really is eye-searingly bright and razor-sharp.
Oh, and it seems to play almost every video file I throw at it. All without being tied into some PC-based bloatware.