My next phone os will be Cyanogenmod. My next phone will probably be the Oppo N1. It has a movable camera. I'm not really into phone cameras but the idea of actually having a moving part on my phone excites me!
The best phone i ever owned was a Blackberry Pearl. Probably because it only had 2G networking which means no internet! I also like the keyboard as opposed to crappy touchscreens.