So basically I have a macbook pro 15 (2008) that works fine. (Yes, i upgraded to an ssd and upgraded to 8gb of ram) It does my day to day assignments and web browsing at school. I'm in music production though and love working with logic pro x, my laptop does ok(ish) but where tracks get too complicated it gets overloaded. Its also nice just to have a bigger screen and base at a desk where i can have all my pads... anyways, i want to buy a iMac and dont know how old to go. I'm on a student budget but i do have a job and only paying for half. What do you think the best bang for my buck would be?