Hi guys! I'm a musician. I had a MBP 15" mid 2010. Had a big problems with it (actually MBP is in apple service) But after they will repair I want to sell it and buy 13". I'm using Logic Pro to record rehearsals and also arrange music. Also I will play Simcity 5 sometimes after they will release for Mac and it's my main computer so music and net browsing I will do too. I will want to use other display to get logic pro at home on a bigger screen. Because I travel a lot so 15" is too much to have if only at home I need a big screen. I think to buy MBA, MBP or rMBP 13" 2013, with 8GB and not more then 256 SSD. I think for now Air have the best PCU 4th and intel hd 5000. Also I can't wait more then 2weeks so I will not be able to buy new release of rMBP and MBP. What do you think is the best choice for me? Can i get some tips to decide better?