Voted Yay.
I am currently running Windows Vista Home Premium and have been for around 6 months now.
When I first received Windows Vista, I couldn't install it on my system quick enough; I was really keen to try out this new operating system. So I popped the disc in and went through the installation process, despite the read error problems I was experiencing during the process which was admittedly completely down to me for not having configured the memory, the installation was a breeze. It took around 30 minutes to install from when it said “Press any key to boot from CD or DVD..”, to the Welcome screen, which I didn’t think was too bad.
The very first thing I noticed once I had logged on was of course the new user interface, I was very impressed. It just instantly felt so much better to use than Windows XP. The Aero design is very nice and just makes using Windows a whole lot nicer. The way window's open and close, Windows Flip 3D, fantastic. The layout of Windows Vista is superb in my opinion, very simple and easy to navigate around, didn't have any problems locating anything.
I have to say that I haven't had any problems with Windows Vista what so ever, I had no problems getting drivers for all of my hardware, the programs that I use all worked fine under Windows Vista. I haven't had a single crash in Vista since I have been using it. The operating system is very stable and reliable.
When I first received and installed Windows Vista, having used it for a couple of months, I was pleased with the speed, stability, reliability and the security of Vista, I would say it was in the same league as Windows XP maybe a bit better. However, now that Microsoft have released a couple of performance and reliability packs as well as all of the other updates and in my opinion Windows Vista is fast, extremely reliable, stable and very secure and in my opinion it is head and shoulders above Windows XP.
Overall, Microsoft Windows Vista is a superb Operating System.