my first question would be : what do you do? is this for music, or audio post for video, etc. Are your projects sent out for further work by others, hence needing something like OMF compatability.
There are many other questions that would lead you the correct answers, but don’t forget – the correct system for you is one that you are comfortable with using, and which allows you to do your work with the minimum of interruption and the maximum creativity.
I personally would go with a Mac, and whilst I use ProTools all day, I would be just as happy using Digital Performer, at a tiny fraction of the cost. You have a PC system, so moving to mac would entail changing ALL your software, and you may find stuff that you can’t live without is not available on the mac.
The other thing that you should consider first – your room acoustics! If the room sounds poor, so will everything you do in it. Get the room analysed and treated, then spend a lot of money on your monitoring. Even an SSL desk will sound crap through a pair of cheapo speakers. I recommend trying the PMC range of monitors….they’re not cheap, but heck are they damned good!! We tried some out here, and liked them so much we bought 2 pairs.
So – decide what you want to use the kit for, then research it thoroughly, then research it a bit more, check out the user forums for your chosen few items – they’ll give a good idea of the problems users have, then have fun spending the cash.
“silly keeps you sane”