upgrade from Paradigm Studio 20s?

I bought a new set of Studio 20s for my main (living room) system last year. They have been a big upgrade from my college cast-off speakers .. my first set of serious quality speakers. Now, I am thinking of another upgrade.

My budget might be $2K for a pair ... bookshelves or towers. Actually, I might consider towers, in order to eliminate the sub ... simplify life a bit.

Anyway, would I hear an improvement, at this price-point?
Any suggestions?

Would have to be attractive and high WAF.

Post removed 
I'm thinking about upgrading my Paradigms to Fritz Carbon 7's. Stellar reviews.
Definitely Fritzspeakers Carbon 7. You will love the bass.
No need for subwoofer
keep the sub and get good bookshelves. all the above are good suggestions. I would add some totems and the smallest PMC (the DB1i I think). heard lots of good things about the proacs and some of the other brands but the best for detail I've heard are the PMC's. I have some ERA D5 units that IMO beat the paradigms but I dont think they will do what you want as well as your budget will allow, actually thats a nice way of saying for $2K you can do better. $2K will get you some really nice monitors and I must agree with Bob above about the $3K price break.