IVA-D105:
Video Monitor
* • Illlumination System: Cold Cathode Fluorescent Tube
* • Number of Picture Elements: 280,800 pcs. (1200x2234)
* • Operation System: TFT Active Matrix
* • LCD Type: Transparent Type TN LCD
* • Screen Size: Motorized 6.5''Screen
IVA-D310:
Video Monitor
* • Illlumination System: Cold Cathode Fluorescent Tube
* • Number of Picture Elements: 336,960 pcs. (1,440 x 234)
* • Operation System: TFT Active Matrix
* • LCD Type: Transparent Type TN LCD
* • Screen Size: Mototrized 7'' Screen
The only difference is the size by 1/2" (which also accounts for the pixel and resolution difference), but are separated by a $400 price tag. I do agree that the one line display is a little odd, but I got used to it. The D105 has a lot more capabilities with add ons tho. I can actually view the address book of my motorola Q and call some one from the screen.
personal preference I guess?