I still use my mini 2 every day. I've used the mini 4 in stores and definitely noticed the lighter frame, faster processor, increased RAM, and better screen, but I don't miss it every time I pick up my mini 2 to use it. I got mine on an open box deal and eventually was swapped out by Apple for a new unit (they didn't have mini 2's that day so I really lucked up) and plan to use this til EOL. For $100, you got an incredible deal, OP!!