iPad 4 or iPad Mini? (For College Use)

I need feedback on this. I currently have a 13" MBP but want to experiment on using only iPad for college use. I still have a desktop PC for any task that requires heavy-multitasking but i'd doubt that i have any as an international relation major

I'm torn on deciding though. Should i get the iPad 4 (plus keyboard case), or should i get the Mini?