The retina MBP seems to be having a lagging issue (correct if wrong. I usually get spend all my time looking a reviews about new gadgets but i get depressed cause i want this one sooo bad and cant afford it

), and i dont know if it is software or hardware. If its software, then I would say to spring for it if:
-You dont mind not having a optical drive (classes may require you to watch a dvd...lol idk. You can always get an external drive though.)
-Not being to upgrade RAM or SSD(?)
-Not being able to eat for a couple weeks due to $600 price bump
An iPad is cool, but i wouldnt buy one unless I had lots of money to spend... *whispers* I dont...
It is a lot easier to whip out the iPad when waiting for your next class and watch a movie. Plus the retina display on the iPad 3 makes it even better.