I hated my CVA Optima Pro so much I GAVE it away as a gift two days ago. Poor craftsmanship. even with rigorous cleaning and oiling, I could NOT keep the surface from rusting. But that isn't the main reason I got rid of it. The trigger assembly was not designed to be taken apart nor adjusted for trigger pull...what ever the trigger pull was is what you got. I didn't realize that when I got it...turns out mine was almost 7 pounds to pull!!!

It took me a while, but I figured out how to take it apart (even though it voided warranty and wasn't designed to be serviced) and filed the trigger mechanism to get a nice 3-4 lb pull.
Whatever you get, hold it and pull the trigger to make sure it is an easy pull....at 7 pounds it became an obstacle to a smooth shot. I am going to get a Thompson Center (haven't decided which model yet). I have heard great things about them, but I will check out the trigger first!!
Good luck!