All about the bass

I am new to the world of high end audio and I am looking to buy a new set of speakers. I am really interested in great bass (tight, powerful and fast). I listen mainly to electronic and classical music.

My budget is up to $5K and my room is small/medium size. Any good recommendations? Should I split the money between a set of speakers and a subwoofer or go all out on speakers ? I am wary of the possible speaker/subwoofer interactions...

Thanks a lot!

P.S. Any good power amp recommendations around the $3k range welcome too...