im currently in the market for an in dash double din navi. my question to all is i have been looking at the f900bt model because ive been told with an upgrade it can be pretty much the same as the f910bt model and this is a great thing. the reason i was interested in this model was due to the dvd playback. now my question is if i decide on the x710bt will i be able to see video using an ipod and videos loaded on an sd card? would i be able to upgrade this unit with the 3.0 software? and also will i lose anything else besides dvd playback? im wondering because i figure i can just load vodeos o
