I'm looking for a affordable yet quality DVD/video headunit that i can have NAVI (not DVD base system)

so far
1.) Pioneer N5 1Din option is DVD base
2.) Eclipse AVN7000 is really old, and i read that there are no updates for the navi
3.) Alpine D106, i'm not sure if it supports NAVI? but i saw a NAVI button on it at bestbuy
4.) kenwood KVT819 is on top of my list right now, cause they have external navi module, although it sucks with space, but then it 1 of my best bet right now although kenwood never really cross my mind as i don't know abt it's quality and technology and popularity, maybe you guys can input

any other option guys? any input would be great, i'm looking to put some quality into my interior (ie, dynamats, speakers ungrades, racing seats..etc)