Same here. My 2011 15" MBP is actually my fastest Mac by many regards. 2.4GHz quad-core Intel Core i7 + pretty nice GPU. I think I put it at 16GB ram, and installed an SSD. I still use it for all of my music stuff, and it doesn't feel slower at all than my 2014 MBP 13" Retina. For what I do with it, I don't see needing to change it at all.