I had the chance to try Windows 7 today on a friend's Mac with it installed (not in a partition, but as a virtual OS). Here's what I've found: It's much more stable than Vista. It seems to be a mix of XP and Vista with XP's reliability but Vista's GUI with a few simple added things. Vista's been great for program compatibility for me, but it seems as if many more programs are not compatible with Windows 7. It also seems that yet more features are copied from the Mac OS, which seems like neither a good or bad thing to me, more or less neutral. Microsoft's goals with Vista were a newer GUI while retaining program compatibility. They accomplished this very well, but it's not all that stable, which is it's worst point. It seems as if Windows 7 is to improve this, but don't expect great program compatibility even though it'll be offered even in a 32-bit OS as well as a 64-bit version which they've seemed to try to push since the release of Vista. They may improve program compatibility, but they also may not. They're going to now have 5 editions, the new one being one lower than Home Basic! I'd put a good bet that it'll be released in January of 2011, and a new version of Office for Windows will be released some months prior. In my opinion, I think Microsoft should have just improved XP since they really had a good thing going with it, and it's been EVERYBODY'S favorite release of Windows for just about every reason. I use a 32GB partition with Vista (32-bit Home Premium) on my MacBook, and I chose to do this to run my Windows-only programs that are 1-12 years old and Vista was compatible with all of them and I wanted to give Vista a try as well. It's kind of slow even with 3GB of RAM and it just does not like my nVidea GPU, but it does what I NEED it to do. So where does this leave Apple? I think that will have the same affect on Apple as Vista did, not much but probably some new customers because of it. Windows 7 seems to just be a better Vista but with less compatibility. The compatibility issue may spark people to switch to the Mac, however OS X doesn't have any better compatibility as it forces you to use only newer (and in a lot of cases, the newest) products (software and hardware being referred to here). Its speed though may make some people choose not to switch from their PC environment. Microsoft may change program and hardware compatibility, but I wouldn't count on it much. It is only in its beta stages though, so you won't know until an official version is released. Should you download the beta? If you're curious and can use it in a virtual machine, then I'd say yes. Otherwise, I wouldn't recommend installing it on any computer you need or that you use regularly. It also will be quite a hassle to install Windows 7 beta and reinstall your computer's previous OS, so running it as a virtual machine would be the best. And if you can boot your computer into that virtual machine, even better! Overall, I'm expecting Windows 7 to be more or less a neutral OS with its equal ups and downs. I'm sure plenty of others have their reasons for why they do and don't like the beta based on their hopes for each of the ups and downs I've listed.