Thanks for the info, everyone. I stopped by the apple store today and the salesperson all but talked me out of the 13" rMBP and basically told me to save some cash and get an Air.
Since, hopefully, it will be my secondary computer, it seems to make sense.
Silly question, but without an optical drive, how do you watch movies and store music? All through an external?
I have an external 8TB drive that I use to watch all my movies and store all my music and pics. I have a secondary backup 8TB drive in case something bad happens. Currently I have 800 blurays including 3D on it and it works great. All said, the enclosure plus drives was right around 600