Speaker recommendation - 3K budget

I am considering new speakers. My listening room/home office is 11 X 12 X 8. Electronics include Linn Ikemi CD, Plinius 8150 int. amp. Current speakers - B&W Matrix 803.

My goal is to improve the resolution, transparency and to "tighten" the bass.

I listen to jazz, vocals, classical, some rock at moderate listening levels.

My budget is 3K and used is OK. I would appreciate any suggestions.

Thanks, Joel