HU upgrade
 

Hi, I have a 2000 LT and I'm looking for a new HU. I don't really care about changing colors, screens, Bluetooth, or pandora. All I need is a USB because I because I have a iPod filled with music. Have less than 100$ and idk what to really look for but have found these from amazon, won't post links but names.
Kenwood KDC-HD455U
JVC KDR520
Pioneer DEH-3400UB
Kenwood KDC-252U
Pioneer DEHX2600UI
Any help is appreciated, will probably be putting some sort of system in it sooner or later, so one that has upgrade potential is a +