Good speaker match for Krell/Naim?

Current system as follows:

Naim CDX/XPS cdp
Audio Research LS7 pre
Krell KSA 50S power
Old Tannoy speakers
Chord solid interconnect
QED speaker cable

Nice sound although a tad bright and needs to be more rhythmic - I am looking for a suitable speaker match.
Any suggestions?
I am not a fan of Krell but enjoyed hearing one of their amps with Avalon speakers. You may want to explore that option or go with the classic pairing of Wilson and Krell...

Keep the Tannoys, and get an ARC amp to match your linestage.
Try some apogee or magnapans.
I agree with the wilson suggestion, but would like to add B&W.