Standmount speaker suggestion

HI

I have B&W 705 s3 Signature speakers paired with a Pass Labs INT-60. While imaging and soundstage are great, I find the speakers a bit bright. What should I try next, and what would be worthy of being mated to the Pass integrated? I will buy used but keeping in line with the value of the amp, the budget is around $5000- $8000 new.

I realize speakers are very subjective. Just want some direction to go. 

Appreciate it.