I kept on Snow Leopard because I didn't want to upgrade my Protools from 8-10. Now I will have to upgrade my OS because Reason is my DAW of choice and Protools 8 will no longer work in Mountain Lion so I will also upgrade Protools!
I would do anything to keep the latest and greatest version of Reason on my machine at any cost, I don't care for Protools but in my line of work, I have no choice but to continue using it too.
Oh.. and for those of you complaining about the upgrade price from 6.5 - 7 in Reason, my upgrade price from Protools 8-10 is $400. Just sayin!