Hi there, i've been a silent user for a long time, reading and learning without much to say... this time i need some advice. My brother is into music production and wants a mac, i own a late mbp 2011 13'' (base model) and for djing (traktor, ableton) its more than ok. Instead he wants to record some instruments (already has a motu microbook), load some Vsts and work from there. For the pass year he's been using a 2 year old lenovo laptop: i5, 4gb ram, 500gb HD. Not needing more than that. Also, he likes to plugin an external display and a led tv, so i dont know how this can affect the performance of the machine. Models: MBA 13'' i7 Dual Core 1.7ghz 4MB shared L3 cache 128gb pcie 8gb ram Intel HD Graphics 5000 // $1249 cMBP 13'' i7 Dual Core 2.9ghz 4MB shared L3 cache 500hdd 8gb ram Intel HD Graphics 4000 // $1349 rMBP 13'' i5 Dual Core 2.6ghz 3MB shared L3 cache 128gb pcie 8gb ram Iris Graphics // $1299 Weight is not a problem and retina display is not necessary. For storage he can later add and external hdd i think. Considering similar prices, which option is more future wise for him? 8gb of ram is ok? Sorry if my english is not the best. Thnx.