pioneer avic-u310bt vs avh-p3100dvd

I thought I was going to keep the stock HU and upgrade the speakers but now i'm leaning towards upgrading the HU first. Anyone got any opinions?

I would rather have nav because I travel alot for work and dont really need the dvd player... but I'm loving the screen size on the 3100. Are there any other in dash nav units for under $350 I should look at? The features I'm looking for are Nav, Blue tooth, cd player with ipod hook up.

Thanks

 

http://www.amazon.com/Pioneer-AVH-P3200BT-Dash-Multimedia-Receiver/dp/B00385I7TU

Get the 3200BT. Just put one of these in. just came out. the interface is beautiful and the BT works really well. Then you can save your pennies and add the nav later.

I played around with the 310 a bit. I wasnt impressed.