Hello everybody! it has been a while reading your experiences around and doing some research... now it is the time to choose my MM! What would you guys be choosing from (best price/performance): A) MM i7 2.0 2011 Server 4GB 1TB (refurbished) @699 B) MM i5 2.5 2013 4GB 500 GB @ 649 both units are from the official apple store in my country at the current prices. Thanks a lot!!!!