I have two big problems with Ultrabooks/MBA in general: 1. working hard for hours on a 13" screen is not a nice experience for me and 2. performance is "just" enough for my programs. Got myself a very nice 24" Dell monitor for €239, so I at least solved the problem of working for long periods of time on a 13" screen. Really hated that. Now I got a very portable laptop and a large screen at home. Only thing missing is performance![]()
If you are the kind of person who cares about mobility, I would absolutely suggest a 13" rMBP. I would get a 13" but I can't pass up how much I love a 15" display (both for gaming and the general largeness of the screen over the 13", and for me that is more important than mobility (which to be honest I care very little about anyway). Also a dedicated GPU (or closest equivalent - if they take it out next year) is also more important to me. But those two reasons are the only ones that have me consider the 15".
Next years 13" rMBP might be a good bet for you (maybe even quad or 16GB ram?) But then again, supposedly next year the MBA will be getting retnia. And you know that's going to mean a large spec bump to come with it. My guess is next years rMBA will be similar to the current 13" rMBP. But to be honest I wouldn't advise trying to convince yourself to get anything except the 13" rMBP, it sounds perfect for you.
If your main concern is the 13" screen while in use, I'll give you my opinion on that. For me, personally, 13" is the line. On a 13" laptop, I can do work sufficiently for x amount of time (a short-medium length "shift") without really being bothered by the screen size or anything like that. On a 11, or 12" laptop it is uncomfortable for me almost all the time, and certainty over a short "shift". 14" laptop (my old windows computer) feels very adequate and I could do medium-long "shift"s without feeling strained or confined. A 15" laptop is quite spacious and it just feels like a non-compromise screen size for all day use.
That's just my opinion, of course. But my point in saying it is that for your circumstance you should be able to perfectly utilize and enjoy the 13" while you're on the run, and be able to equally enjoy using it at home, if you plug it into your monitor. And the power should be great too, for it's bump over the MBA.
Hope that helps. I know many people are on the fence. I'm one of those people who tries to help others understand not to let themselves be persuaded by feelings
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