Wow, what a difference a few years makes. I reviewed Windows Vista upon it's release and was quite scathing in my review. In the end they never did quite get Vista up to scratch. I basically built my system dual boot XP+Vista and every month I would boot into Vista and update any required drivers, patch it all up and then try some gaming, and each time it was nowhere near as fast as XP running on the same box.
So, I've been running Windows seven for a couple of months now and prior to that I'd been running the release candidate version. I've deliberately held off reviewing Windows 7 because frankly I've been waiting to see if any problems appear with it. The good news is that so far I've had very few problems. Infact for the last 2 months I've been running my system with just Windows 7 and haven't even bothered having XP installed at all. This is a big deal, kind of like taking off the training wheels.
The install experince for Windows 7 was very painless, I had non of the SATA RAID controller driver issues that Vista had. Once installed the OS is lovely to look at, to be fair it has more than a passing resemblance to Vista with both OS's looking very similar, but for me the important part is in how the OS affects games performance and overall game compatability. Windows 7 has run every game I care to chuck at it and it runs them just as well as XP. Even the games engines that still gave me problems with Vista would run silky smooth on Windows 7, namely games such as: GTR2, Race07, iRacing. Infact the only game I've struggled to get working is IL2 1946 which needs some tweaking apparantly to make work on Windows 7. All other games I've tried have worked.
I also experienced non of the sound card device driver issues I had with Vista for my Soundblaster Xfi Fatal1ty card. This card was a nightmare to get working on Vista, but works fine on Windows 7.
There is not really much more that I can say as to be honest I really only use an OS as a platform for gaming, so I don't tend to make the most use out of the features an OS might have. All I can say is that if you are a gamer who avoided the move to Vista, quite rightly in my opinion, then it really is time to think about making the move to Windows 7, it is a fantastic OS. Microsoft couldn't afford to drop the ball a second time and I'm glad to say they havent.