So I got my free Win7 copy this morning and installed it earlier. I've been using it all day and so far I like it. I do have to get used to the taskbar though, but aside from that I like the overall speed and feel of it. So far I've been able to get drivers for hardware fast and easily with Windows Update, so that's definitely a plus. I do have an issue with not being able to get 5.1 sound and only 2.1, but I can live with that for now. I loaded up Visual Studio 2008 and have been doing some updates on other code and haven't had any hiccups or anything.
At this rate, unless something just startling pops up anytime soon, I plan on building a new PC end of the year and use Win7 as the future OS to do my work in. I still have a few more programs to install and evaluate, but so far so good.
I'm happy as a clam.