My experience has been going back and fourth positive/negative. The biggest annoyance is the all the broken stuff in Quicksilver. I cannot live without QS and with the multi clipboard & shelf broke I haven’t felt good enough to erase my identical clone backup of 10.5 the day before going to 10.6.

This morning was positive because I found this link and more specifically read this and spend 15 minutes playing with Expose.

Expose Shortcuts — As one of the few feature changes in Snow Leopard, you’ve probably seen how Expose now works from the Dock, arranges windows in an easier-to-read layout, and enables you to move content between applications. Here are a few shortcuts that will make Expose even more useful:

* With all windows visible (press F9 or the Expose key [F3] on recent Mac laptops), press Command-1 to arrange the windows by name.
* Also with all windows visible, press Command-2 to arrange them by application.
* Press the Tab key to view all windows belonging to one application (equivalent to pressing F10 or Control-F3 on recent laptops). Press Tab again to switch between applications while remaining in Expose. You can also click an icon in the dock.
* Hover your mouse pointer over a window and press the spacebar to view a larger Quick Look version of that window. [JLC]

I had already noticed the screen shot file naming tweak and much appreciate that. Almost as much as the smart eject feature.