will this really be an upgrade?

Trianglezerius, what would you suggest I do?

thanks Bigkidz.
I listed my post to try and figure out if their was any basic 'rule' on how much to spend on your next upgrade. I didnt want to end up buying something that would expose shortcomings in other parts of my system. My main concern was, whether to upgrade incrementally , or go the whole hog and get something like a Joule, Cary, etc.

using the B&K ST-2140 amp, and have two subs already.

Thanks for the advice

Flemke, what then does the PT-3 compare to in your opinion; Rotel, adcom....