Callaway CXR Control/Titliest Trusoft - any good?

Okay, so a few observations from me playing with my balls!

(1) If I use a Pro V1, I put myself under a bit of pressure as I think - "This is the best ball, will go further if I hit it right etc" so I normally end up hitting it badly and loosing it. I tend to play better if I use what I think is a lesser quality ball - CRX, Srixon.

(2) Would I really feel the benefit of having a ball fitting whether to help with driving, iron, wedge or putting play?

(3) Can we, the higher handicapper, less frequent player, really feel the difference between a top quality ball that costs say £35 per dozen against a lesser quality ball that costs say £19.99 per dozen? I know I would feel the difference in my wallet!