To be honest I think I personally prefer Lion opposed to MLion, software update doesn't seem to work very well. It tells me my system is up to date even though ARD and anything Java related wouldn't work until I manually downloaded the updates from apple.com
It has also broken Mail for me and it no longer likes my smtp server and deleted all of my mail rules.
All this just to get a notification centre and dictation seems a bit harsh.
Would like to know what everyone else thinks.