Hi everyone - this will be my first time purchasing a Mac. I have decided to get the 17" because it is not something I will be porting with me very often and would prefer as large a screen as possible. Some of my uses include: Heavy photo editing, batch editing (photoshop) general internet browsing (usually have many tabs open) listening to music watching dvds I typically multitask a lot, so will frequently have a lot of browser tabs open, photoshop, maybe Word, etc open at the same time. I'm looking to purchase the fastest system for under ~$2600-$2800 I would say. I am willing to upgrade (i5 vs i7, 4gb ram vs 8, 5400 vs 7200 rpm, SSD?) if it will make a significant impact - but am ok with not upgrading if the increase in performance is very small. I would greatly appreciate your help! Thanks!!