Sure, if your priorities are the smallest size then the 11" is the way to go.
Otherwise, if you want something almost as portable, dare I say as portable, (imo), with added power, more screen real estate, (as much as 15" MBP), more productivity, less scrolling, better screen resolution, longer batter life, built in SD card slot then the 13" is for you.
More features, more power and more productivity in a slightly larger frame OR less features, less power, less productivity in a slightly smaller frame.
If I had to decide on one I'd choose
more ... I don't like less