Hello, I'm looking for some advice as to what is the more powerful machine? I do music production and currently have a mid 2011 iMac. It has the 3.4Ghz Intel Core i7 processor and 20GB of Ram. Lately it has been struggling to run some pretty intensive plugins within big projects using logic. I am ready to upgrade as the machine is now 5 years old. The new MacBook pros look very nice and to be fully portable would be a big advantage... But what is the more powerful machine? I would love the new MacBook Pro but the iMac is configurable with a 4.0Ghz processor which would surely run the software I use better? Or am I wrong? Any advice would be greatly appreciated! Thanks, Joe.