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.