I'm almost disappointed that I wasted a DVD-DL on it. I had Leopard running really smoothly... but after I had seen some benchies and reviews on how great SL is, I decided to give it a go. I honestly fail to see what all the rave is about. As expected, all of my drivers/extensions are now broken, but I guess I can't complain because the official OS isn't even out yet. But... aside from a few UI improvments, I can't see what Apple has been doing with SL. I had Leopard highly customized, but it booted faster, had less quirks about it (but I guess you can always rely on having problems with a fresh build of an OS), used a similar amount of memory, and didn't crash right and left. I deleted all of the PPC code/languages from Leopard, and it was just about the same size as SL, in terms of space requirements, and booted a good deal faster. I don't have VMware Fusion or a lot of other apps installed on my SL installation yet, and SL still takes 40+ sec to boot, while Leopard takes < 30sec with a whole lot more installed. But boot time really doesn't make a difference. My biggest problems are that: Expose lags TERRIBLY on my MB (Intel GMA X3100), iChat crashes whenever you try to start a video chat, the CPU fans seem to be running a lot harder( and more often), and there's just nothing "new". OpenCL/Grand Central/whatever doesn't seem to be doing anything for me in terms of processing power. I understand that the upgrade would only set me back $30, but I don't want to pay for *just* UI improvements. I've only been using SL for an hour and I'm begging to go back. I definitely will not be purchasing SL when it comes out, for a long time anyways. I'm a student, and I bought my Mac because it was reliable and fast... and Snow Leopard just doesn't seem to be either. Thoughts? Comments? Opinions? I'd like to hear from others who have tried the Gold Master build.