I am in the market for my first iMac soon. Originally, I was planning on waiting until the "back to school" ipod promotion, but after taking a look at the refurbs, I am starting to reconsider. I am stuck between the Refurbished iMac 24-inch 2.8GHz Intel Core 2 Duo @ $1300 24-inch glossy widescreen display 2GB memory 320GB hard drive 8x SuperDrive (DVD±R DL/DVD±RW/CD-RW) ATI Radeon HD 2600 PRO with 256MB memory Built-in iSight Camera and Refurbished iMac 24-inch 3.06GHz Intel Core 2 Duo @ $1600 24-inch glossy widescreen display 2GB memory 500GB hard drive 8x SuperDrive (DVD±R DL/DVD±RW/CD-RW) NVIDIA GeForce 8800 GS with 512MB memory Built-in iSight Camera I am a med student who will be using my computer for all of MS office, iwork, iphoto, endnote, watching movies, & online tv, and most importantly gaming. I would like to be able to play cod4, swtor (when it comes out ... eventually), maybe crysis, and any other games that strike my fancy. Something I am looking for is longevity, so I wont have to buy another gaming/media machine for ~3 years. Is upgrading to the 3 GHz worth it for my wants? Are the old imacs good enough for what I want to do or should I start looking at the current imacs?