Another thing that upgrading does is show you how Cakewalk is really pushing development at a fast pace, responding to users concerns and requests with features and fixes. Also they said they would continue to release updates at a monthly rate as features were ready. They have have been good to their word with releases of features every month.
While some have mentioned bugs, whether you are effected by them may be dependent on lots of things. Not denying there's bugs, just they're not universal to every user.