I usually hate these types of threads but I'm looking for some quick feedback... Take a look at my current MP specs in my sig. Yesterday I went online and built a new 12-core machine and made some basic upgrades, yada, yada and the total came to just under $6k. I use the machine for video encoding and CS5 (PS, DW & Ai), Fusion (WinXP but likely upgrading to Win7) the other piddly stuff web, email, MS Office, calendaring, iTunes. If I could get $3k for my machine (still under AppleCare till March 2011) which makes the upgrade to the new machine $3k, would you do it? Why or why not? How much productivity increases will I see?