I use a 13" Macbook Air and find it to be perfect, though I don't think 15" is unwieldy, even if you're like me and work from couches/cafes frequently. Laptops

I use a 13" Macbook Air and find it to be perfect, though I don't think 15" is unwieldy, even if you're like me and work from couches/cafes frequently. Laptops are just so thin and light these days that 15" hardly seems less portable in most scenarios. The main reason I use 13" is because I'd probably spend $1000 more for 15", and I try to limit the price of hardware in total that I have on me. My laptop and phone together cost about as much as a loaded 15" rMBP. However, 15" seems to pay off when using IDEs with all their panes.