So far so good
Trying Windows 7 Ultimate Edition. Majority this product is enchament Windows Vista Core. Microsoft not just increase user experience but also increase functionality for rendering and theming. There is also significant improvement on Memory management. So far there are little annoying that comes with Windows 7, if we the CPU Usage is high / peak then the performance of overall windows will be dramatically decrease (maybe this will be gone in the True Release of Win 7 
).