My guess, is you would probably like Win7 more than Vista Wiz...
Then again, I have been known to be mistaken before
I took that new MSI Touchscreen PC I got (which came with XP on it), put Win7 on, and it runs at least twice as fast! It's a fairly low end machine, Atom 330 (which is a true dual core, but still slow compared to a regular processor), 2 GB RAM, and a 250 GB drive.
It is now usable for more than a digital picture frame
I have crashed Win7, although it's the pre-release, and I have some wacky drivers, so no surprise there. I have also recently had Vista 64 start crashing on my main dev machine -- that had never happened, until I loaded some 3rd party Codecs to test, that appear to be incompatible with the built in sound card drivers...
So, everything is in fact crashable -- providing you use crummy software and drivers
