I tried so hard to like Lion but it just does nothing for me. Apple seemed to change way too many things that didn't need to be changed in the first place for the heck of it. The scrollbar, "leather calendar", etc. really aren't necessary to me and I feel like these are a small step back. Things like mission control follow suit and at the same time drastically change the interface for the worse. Everything feels so unpolished and buggy. The gestures are cool, but nearly all of the major ones are already available on SL. Safari runs really well, but little things added like having the page move when you scroll up make it seem more beta-like rather than a refined program. I understand that they wanted it to be like the ios safari, but why would they choose to essentially draw inspiration from their watered down version of safari? Again, the inverted scrolling is another thing that seems unnecessary to add. It works great on touchscreen devices in ios but whats the point? It seems much more unnatrual but I suppose it takes getting used to. Too many other pointless changes have made the experience feel lacking. I feel like I upgraded when going from Lion to SL. I guess your mileage may vary but I was extremely disappointed to see how poorly it ran on my 2011 MBP 13 inch. I understand I am running integrated graphics, but I had to disable the (new and inferior) dashboard to make it run at a reasonable rate and not be jumpy when I scrolled on webpages. These are their best selling MBP models by far and they can't even run osx lion the way it should? Not everything is terrible. I like the launchpad function, and the new mail app works really well and is probably the only thing from ios I am happy to see ported over. Full screen apps are nice too. Overall, I feel like Apple really dumbed down the interface and is clearly a little too concerned with the ios platform. It's a shame as I was very excited at first for Lion. We are beginning to shift from the charming and pleasing osx interface we have come to love to an interface that looks like a glorified phone. I hope that Apple retains quality control and fixes the various bugs and problems Lion is riddled with. I see that plenty of people are enjoying their experiences on here, and good for them. Hopefully your experience and opinion differs from mine.