I used cubase for years with PC. Got fed up with my PC being crap and bought a mac, best thing I ever did!
I bought a used mac G5 for about £300, then a used digi 002 interface for about £400, then Pro tools LE8 for £100
Total £800, turned PC on, installed software, plugged desk in, ready to go! No messing with drivers or any of that rubbish
Took some time to get used to PT, but it is very obvious in a lot of respects. It just works every time, no problems unless I run some huge plug in, and that is just cos the mac is an older machine!
Best move I have made, guitarist in my band has similar set up on a sh*t hot PC which cost a fair but to build, we move sessions between machines without any problems. Great for writing and we use a lot of tracks, which has never caused me a problem
Tony