I was in the same boat as you up till a few weeks ago. I was a Windows / Linux user. Never really enjoyed OS X. Have one were I work on an old Mac Mini and its SLOW.
I kept buying cheap laptops that were falling apart in a year or so between class, travel and personal use.
I got the 2.0 aluminum and swapped out the 160GB hdd for a 250GB I had laying around. With boot camp, I used 40GB for Windows 7 32 bit beta (build 7000 I think) and used the rest for OSX. I used the Leopard CD to install all the drivers for Win7. I haven't looked around for newer drivers yet.
Only thing is that my touchpad seems sensitive in Win7. I cant press click it (opposed to tap click), or it double clicks, and sometimes when Im moving it thinks Im clicking. Not sure if thats a Windows thing, Win7 thing or something else.
Oddly enough, I find myself using OSX 90% of the time anyways.
Big deciding factor for me on getting the MB was that I could run Linux, Windows or OS X on it.
Good luck with your decision.
that is a windows 7 driver issue with the MBP, because Win7 is still in beta mode apple hasnt brought out any drivers for it.. so of course you will experience some difficulties using the new trackpad.