I have had 3 iphones but never a tablet. my wife and I have always just had laptops and they are usually close by the couch. was wondering if getting a ipad 4 is a good idea. the upgrades from the 4 to 5 arnt that great other than size/weight. and I wont know the difference. opinions on if it seems like a good idea or will it really lag as ios has updates? refurbished also, if apple still has them possibly also.