Made the Bushmaster plunge, I bought an M4 Dissipator upper complete, with night sights. $321 with tax was a major influence, but I really like the feel of it. I had bought an 20" Wilson barrel to put together a build with Cav Arms glow in the dark furniture. ALL I needed was an upper and bcg, but this is the shiznit. I haven't had a chance to take it out since the build.
Here is a pic (sorry about the RRA, setting with it) lol
and with some "spare" parts on it for a more traditional look