Which best amp to drive my B&W 804s?

Hi audio friend,
Could you pls help me to check which best amp to drive my b&w 804s. I had to found so much on internet and i now had so many question on my head. Pls see my short list below:
- Mark Levinson 23.5 or 27.5 pow amp and mark levinson pre amp also.
- Krell KSA 250s pow amp or KAV500i integ amp
- Musical Fidelity KW500 interg amp or Nu Vista M3 interg amp
I only hear country, jazz, little pop music.
Pls help me
thanks for your read