I'll try to make this as concise as I can so that I get more good replies and don't have to include a TL;DR summary at the bottom. I want to get into a music production so I decided to buy a MBP to get a good, stable machine. After measuring the pros and cons of both products I just can't decide what to do. I bought the 13" to get something in my hands to use but I'm still not sure I made the right decision. I want to use the machine mostly for: -Music production with Ableton Live 8 -Moderate gaming with WoW in a raid setting (quite graphics intensive for those who don't know) -General use (music/word processing/web browsing) -Portability -At home use with a 21.5" display. So the main issue is that I've ran WoW on the 13" and it is far from pleasing. It's near impossible, but the big seller on the 13" is the size. The 15" has the dedicated graphics that I need, but it's lacking in the super portability. I guess what I'm saying is that the best option for me would be a 13" with a graphics card option, which is frustratingly not offered by Apple. I don't know what to do and I'm not even sure what kind of advice I'm looking for. I'm just getting my thoughts out until I can make a final decision. Thanks!