I have one Titan right now which is the second one I've owned, and I love this board. But as others have sort of indicated, it's not very forgiving so you have to be on top of your game the whole time. Nothing I have ridden carves as hard or turns as quickly considering its length, but get lazy for a couple seconds and you'll regret it. Also this board definitely does not like to slip sideways when speed checking, if I really slam on the brakes it starts hopping on me sooner than my other boards will.
I can't compare it to the new premier, but I also ride an older T5 (wide premier from about '04) which is a less demanding, but also slightly less capable board.
You might be making the right decision with the Premier if this will be basically your only board, it will let you ride the whole mountain without having to worry about small mistakes being magnified.