Help with speaker upgrade

Want to upgrade my speakers from PSB Century 600i floorstanders to a solid pair of bookshelves that might eventually move to rears in a surround sound system. Currently, I only listen to two channel, but I MAY try and build a two channel/HT system in the future, and would like to keep the bookshelves for surrounds if possible. I am using a Sony SACD player (DVP-NS500V) running through a Musical Fidelity X10-D into a Jolida 302A integrated tube amp. I am looking at the B&W 602 S2's, Triangle Comete's, Totem, Tannoy Mx2's, and Soliloquy 5.0's. I'd like to stay under $700. I listen to primarily jazz (brad mehldau and other jazz trios, female vocals) and classical (chamber music, symphonies, solo cello, solo piano), some blues. Any other suggestions and all comments are welcome. Thanks in advance, and happy holidays to everyone.