Basically the title says it all...

I'm clueless to this sort of thing, so I apologize in advance if anything in the following post doesn't make sense.

I want to replace my factory head unit with a 2-DIN in dash navigation unit. Only thing is, I'm not sure what's out there. The feature's I'm looking for are:

-Does NOT need to put the navi DVD in when I want to navigate. (I may be willing to sacrifice this for a good deal)
-Has voice-assisted turn-by-turn instructions
-Enables me to listen to CD's / MP3's while navigating (obviously would have to interrupt music when giving directions)
-Plays DVD's
-User friendly...I don't want to have to sit in my car for 10 minutes to tell it where I want to go
-Not crap...but not too expensive

Secondary features (not that crucial):
-HD DVD
-Satellite radio compatible
-Bluetooth (not crucial at all...but if it's got it, BONUS!)

I don't want to spend $2000 on this, I'd rather put that in my engine or towards a JDM conversion, etc...

As always, any help/info is greatly appreciated