I bought Logic 9 Express at about the same time as you, because I knew it would run on my iMac's OS. I'm loving it.
I switched from PT10 in despair, because the latest PT upgrade, which I shouldn't have bought, was too much for my CPU to handle, plus the extra functionality and fixes were of no relevance to me.
Logic is a breeze to use and has all I need. Cheap, too!