Myself, I'm a Mac convert as I was a PC user for years. I would have to say that I'm happier overall (and poorer as well. lol!) I used to debate whether I should stay on PC or move over to a Mac - for it seemed that a Mac was much more stable for audio and video production. And at the time, maybe 2 years ago, this was the case. But these days, I think that both platforms are fairly stable for the most part.
In regards to DAWs, I've stuck around w/ Cubase over the years, both on PC and now on a Mac - I've been tempted to switch over to ProTools, for no other reason that its seems to be "the standard DAW", but all in all, most of the DAWs these days have the same functions and its about how we use the DAWs which is fully transferrable from platform to platform and software to software.
In other words - its all good!
-Peter