I got a Kenwood 890HD as a factory refurb from drive in auto sound for around $375. When they came out, they were like $1200 but now you can get them new for around $500 if its not a refurb.
Install is extremely simple. It has just about everything on it: HD radio, satellite radio ready, nav, bluetooth, USB, back up cam (additional item you have to buy, but its only like $20 online), DVD, CD. It came with a free two year warranty so I wasn't too concerned about it being a refurb as I can just return it and get a refund if it craps out in the next two years.
Overall, I'm satisfied. Ive had it for about 8 months and its pretty solid. It doesn't have any glitches like other double din units ive used.
there should be a pic in my build thread.