For quick navigation of 9 spaces with assigned apps it's probably best to just use Ctrl-1 thru 9. Spacial navigation is pretty much dead between full screen apps and auto-rearranging of the spaces (well, you can turn that off I guess), so I decided to embrace Apple's new idea and see how it works.

First of all, I hated Exposé and never used it. Mission control actually is useful since I can see the apps and organize them quickly (much quicker than with SL Spaces in fact). With the horizontal spaces, navigating them quickly is less confusing, and with auto-arranging spaces it makes switching back and forth between arbitrary spaces a lot easier, sort of like Command-Tabbing.

It's a huge change from Spaces, but for me (using 4-6 SL Spaces) never reached a level of perfection due to the small bugs and unpredictabilities in the system. I'm going to give Apple the benefit of the doubt and see if they can come up with something better. So far there are some real nice touches to Lion window and space management.