Coming from a Mid 2012 MBA, here are the reasons why I'm planning on upgrading. The 2016 MBP will give me: - A retina display (finally) - Better battery life (the battery in my MBA only holds 65% of its original capacity. I could replace it but then I'm putting money into an aging machine) - The ability to drive a 4K monitor - Hopefully some light gaming usage (i.e. Stardew Valley, To The Moon, etc.). My main reason for upgrading though is that I want a nice desktop experience when I'm home. My MBA could probably drive a 1080p display but I'd prefer something with higher resolution in 2016. That means upgrading my MBA, which I'd have to do at some point in the near future anyway given its age. I briefly thought about a 5K iMac but it's almost $2K after adding basic options like an SSD and trackpad, and it hasn't been updated in over 400 days. This option also presents less flexibility I think than a MBP and external monitor combo. The reasons why I'm planning on getting the nTB MBP are because it's less expensive, and has better battery life, dedicated escape and function keys, and supposedly less problems. With government pricing I could get the TB MBP for $1699 but I'm not sure that would outweigh the benefits I just described with the nTB MBP.