32ent

Hello Im new to the forums and am trying to make a decision on which unit to buy. I want to get the best that is out there but am on a budget, I have seen that the x910 can be $400 cheaper in some places than the Avic 110bt. My question is are there any significant differences between the two besides screen size? If i was to buy the x910 what features would I be missing from the Avic 110bt?