This is my primary (and only) work machine. I use it for everything and is way better than my old 17" MacBook Pro. This is a new 13" retina and if you're a developer this is probably the best combination of power and size available. It's just a bit heavier than a 13" Air but way more powerful and with a better display. I also bought a gorgeous sleeve from Hard Graft for when I need to carry the Mac with me.