I know we don't know yet what the MP refresh will be exactly, but... Would there be any performance difference between a 3.4GHz quad core i7 with 16gig RAM versus a very similarly spec'ed new MP? The iMac CPU is basically a laptop version, but since the MP would undoubtedly be afforded more cooling, etc., I'm wondering where the differences would be?? And would those differences be enough to justify the cost? I'm seriously considering a loaded iMac with an SSD vs waiting for the MP refresh because, quite frankly, the $2K + price difference is staggering. Besides, I'm upgrading from a 2007 2.8GHz Core Duo iMac, and the new Sandy-bridge architecture, increased cache (and cache speed), increased RAM, etc., would make a new iMac seem like a rocket. I'm thinking that the TB port on a new iMac would afford enough expandability (that the old iMacs lacked) that it begins to approach the performance/expandability of a MP. Am I wrong in my thinking??? You guys are the Mac gurus....I'd like to hear your thoughts on the matter.