I'm looking at getting a new iMac in the next month or so. I've been waiting for the new iMacs like everyone else for a long time, however now I have an offer for a 2011 27" iMac with the 3.4 GHz core i7 processor and ATI Radeon 6970M 2GB and 16GB of RAM. The guy wants $1800 for it. Now my question is, I could get a brand new iMac for $2000 free shipping no tax as seen here. So should I wait for reviews of the new iMac to come in? Is the $1800 price something to jump on? The computer is still under warranty, so if something is wrong I can get it fixed. Performance-wise my main question is around the core i7 vs core i5 processor and the gtx vs radeon graphics cards.