Vista, technical questions

if we believe this test : http://rainrecording.co.uk/vista/performance
Vista fucking outperforms XP. But I don't like to rely on benchmarks found on the internet. But this is true that the graphical interface is now managed by the gpu and so let the processor disponible for other tasks.
I'd like to have thoughts and advices from people (professional or not) about audio in general and Vista.
- Does Vista really manage better multi-cores ?
- What about memory management that has been horrible, until now, XP included ?
- the new sound API, how is it ? Will there be a problem with asio4all ?
- and of course, software compatibility and stability in general, if you regret to have migrated from XP or not.

>>5
"What exactly is so horrible about NT's memory management?"
Well, I have a Q6600 with 2G of ram, and apart from when I use really big apps, XP is unable to use all the ram available, it stucks at 512M of use and prefer to swap to disk whenever I use multiple little applications, compared to *nix systems, it really fails hard on this point. But it seems that Vista is going the same way as its concurrent now(prefetch for example), in a different manner though.

>>6
Thank you for all these informations, I'm not surprised at all about multiple cores management, after all XP is too old to have been made with this in mind. About the soundcards, I'm aware of this problem, but since I planned to buy a new one (along with all my hardware recently) I just have to choose the new one with precautions. And the fact that you don't have to reinstall periodically the system is a plus too.
Finally, since Vista is really exepensive (in France it's twice the price of America's) I will take my time to take a decision, will test it in a virtual machine and if I'm conviced, wait for the SP1 to migrate.
If others want to share their thoughts and experiences, they are still welcome.