Front end usually doesn't determine what touch screen to buy and touch screen won't determine what front end to run... Front end is all in your choice of choosing which one functions to what you need it to do.Will what ever front end I choose to go with have any impact on the display/touchscreen, should I figure out the front end first? And for 7" touchscreens I see there is a very wide difference in cost but I don't know what the differences are in usability. Maybe just paying for a clearer, more sun friendly display?
The more expensive models are usually the transflective screens, where sunlight won't glare your screen. I don't have experience with transflective (out of my price range) but the majority of users on here state they wish they would have gone straight to them instead of using the resistive non transflective screens first.