Macs have great hardware (as in, great display and a great touchpad - and the best thing is the computer wakes from sleep when you open the lid, every time; I don't particularly care about the M-series except that it runs super duper cool for how fast it is).

That said I've been tooting the horn that they are not good software development machines for about 2 years now (incidentally matches exactly with when I got a work macbook pro).