I am trying to decide on whether to buy a macbook air 13" 2015 (4gb ram, 128gb ssd) for $749 or a Mac Mini 2.6ghz 1TB 5400 hd and 8 gb ram for $599. This is a one time discount that I can use. My concern with the air is the 4gb or Ram. How long will this last with new OS releases in the future. My concern with the Mac Mini is the 5400 rpm hard drive. I have a feeling with the slow hard drive it will create a bottleneck. Is 4gb enough ram on a MBA? I know the Mac OS takes about 2GB ram to run. I looking to use this machine to primarily learn Xcode. Right now, the MBP is not an option due to cost.