hi, I need help to find out the right device to buy being that the game should be tested to run in the slowest (minimum) device targeting iOS 7 or iOS 8 between ipad 2 and ipad mini which would be the slowest/minimum? ipad mini is younger but has the same ipad 2 configuration the only difference is the display size and the amount of ppi ipad mini has the smaller display and +31 ppi than ipad 2 targeting iOS 8 between iphone 4S and ipod touch 5th which would be the slowest/minimum? ipod touch 5th is younger but has the same iphone 4S configuration the only difference is the screen pixels ipod touch 5th has more screen pixels ( 1136x640 ) than iphone 4S ( 960x640 )