Seems a bit light on features for what you're paying...
No anti-theft, but thieves love flashy looking head units (which that one is)
No MP3 playback
No remote
Very small, limited display
Only 2 sets of preouts - which sucks, because there's no built in amplification
It is probably an incredible sounding unit, but unless you're putting the sound through incredible sounding speakers (which I'm willing to bet you're not going to be) the additional sound quality offered by this HU will be lost. You can do a lot better for $300, IMO.
That said, I currently have a Rockford deck that I got a couple years ago for $260. Mine has 3 sets of preouts, MP3 playback, full copper chassis, 45Wx4 built in output, a remote, and a flip down, removable face.