you are still better off getting bluetooth reciver and ipaq or xda2 , very versitile , the prob with an all in one is it always needs to sit near windscreen, i have ipaq 2210 ,xda2, and nokia 6600,spv c500 all running tomtom software , and its the mutts nuts , specially speed camera warnings are very handy, garmin ones are bit week,
ipaq do 3d view on tomtom3 which is ok,
i ahve my xda sat bext to me on seat just talkin and telling me which way.
pm if u want more info