I'm going in circles trying to decide on a 2nd mac. I have a new 2012 13" rmbp w/8GB/128GB on hold at best buy for $1029. I can buy a new 2013" 13" rmbp w/8GB/128GB w/ed discount for $1139. I can buy a new mba 13" w/8GB/128GB w/ed discount for $1139. I don't want to spend more than 1199, and this will not be a workhorse - it's a casual, around the house and occasional travel use machine. 128 GB disk is probably sufficient, and at least 25% of the time it'll be hooked up to an external monitor. Which should I get? I'm leaning towards the 2012 rmbp from best buy, but not if even as a casual machine it's going to be at risk for becoming prematurely obsolete since it's a 1st gen retina laptop.