Best speaker design for low to mid volume?

I'm not asking brand etc. I have a condo that had a listening area (approx 20 ft X 15 ft). I'm looking at floor standers. Generally, should I look for few drivers or more the better? Some speakers are 2 way, 2.5 way, 3 way etc). I listen to everything from classic rock to jazz and classical. This is a 2 channel system. Some tv/movies will be played through speakers as well. I like full bass (not so much the very tight bass sound and too crisp sound I find with Klipsch). Please chime in...sitting area approx 7 to 10 feet in front of system. I'm not looking for bookshelf speakers (WAF).