Ditto awhig's comments.
I took the CBT because I just don't want to deal with shadings and what not. It's fast, and adaptive.
When you are keen on shadings, comfortable writing with your hand within a limited time, then PBT is for you.
Still, I like to be able to choose from the KL centre, out of three days and two sessions, in the morning and afternoon.
:) Just my 2 cents for your 50 cents