A friend with a '10 Jetta Wolfsburg said that he can tell my E model has a crisper/brighter screen. Anything E or greater should be ok.
Some 310 models came with Sirius, my Golf didn't but I've seen some for sale here in the classified ads. But yah HD Radio, touch screen, onscreen phone contacts if you have the BT module in the car, 6 disk changer, and the SD card slot are the main differences between the two models.