13" 16/512. Mostly, it is what I have always had and never felt I needed more ( though I sometimes think it would be nice ). Also, price was a consideration. My 2017 MBP "died" ( won't boot up and fan just runs at a ridiculous pace with a black screen ). I didn't want the base configuration, in either the Air or the MBP. This Air feels like an ideal replacement. I don't to anything "professional" in any case. Overall it's a definite upgrade from the Intel MBP. The one thing that has become noticeable is the display is clearly not as "crisp" as my previous laptop. But I'll live. Happy with the choice.