Absolutely not. I purchased it along with a brand new Mac Pro. I was using Leopard for about a week until Snow came in. Nothing but beauty from Leopard, with Snow- nothing but problems.
-cannot access PowerPoint
-shuts down randomly and restarts
-cannot link with Network server adequately
-Illustrator does this weird graphics thing if I nudge an item
Individually nothing serious, but overall, sucks ass. DO NOT BUY SNOW LEOPARD.
At least til they figure out their issues.
My experience with Snow Leopard is exactly the opposite of yours. The upgrade install went off without a hitch (on all three Macs we have here: Mac Pro, Mac Book Pro and iMac). All current versions of all software work fine with no problems (including Word, Excel, Powerpoint, VMWare Fusion, Parallels Desktop, Adobe Photoshop Elements, Cubase, Logic and many more). All our printers (Brother and HP lasers and ink jets) were installed during the upgrade with no problems. And, we have seen a noticeable increase in speed on all thee machines. The bonus however, is that battery life on the Mac Book Pro has actually increased by about 10%.
Why my experience is so much different from yours is not clear. However, one possible reason could be that you may have installed some third party plugins and/or system hacking programs on your mac before you tried to upgrade which always makes upgrades tricky. If you did not do this, then perhaps you have some hardware issues? I don't know, but I can tell you that I found SL to be a wonderful and easy upgrade here.
Those are pretty unusual praise from me as those that know me on this forum are aware that I am quite a complainer normally.
Dave