1) Try Reaper. Everybody loves Reaper. It costs nothing and it gets updated like twice a day. Reaper is the cheap punter's swiss army knife. Pretty sure it'll run on damn near anything. What you do on OS X will translate not poorly to Win.

BUT

2) If recording matters, it's the big boy, bitch. Muffukkin' Pro Tools. There is no one serious doing anything serious in anything other than PT. It's ugly, it's expensive, it sucks at MIDI, it uses its own proprietary plugin format, and it absolutely owns the professional market. Here's the castrated version. fuck around. It's the same Mac or PC.

Logic has its charms (Maaan, I luuuuv Structure) but it has its issues as well. It's far, far easier to accomplish something decent-sounding in Pro Tools these days because Logic pretty much insists on the Smile EQ on everything you do out of the box - "oh, what's that? You want a 'guitar' track? Here's 15 plugins including an EQ with 9dB of boost!" - but you have to come from a position of knowing less is more, keep it simple stupid, slow and steady wins the race. You can get decent shit out of Logic but you kind of have to de-fang it and keep it from doing anything stupid. 'cuz it so wants to do stupid shit.