I got a MacBook for a freelance development project (also needed to build an iOS app) and I have to say that the OS itself feels pretty good. Very much a walled garden and normally perhaps outside of my budget (and the button order on the keyboard feels odd), but in general it's pretty smooth so far!

Nice to see various customization options, BetterDisplay was also pretty useful when dealing with an external monitor (sadly I never figured out why there's no proper anti-aliasing on the external monitor).