W4S STI500 or MF A5.5 for Kef R500?


I have a pair of Kef R500's incoming. I am deciding between a W4S STI500 or MF A5.5 integrated amp to power them.

Opinions?
mattnshilp
I know the speakers. More power will help to improve dynamics, bass response and control. I decided on a Musical Fidelity M6i.

They are ridiculously good speakers for their price. Truly a mega-bang for buck product. U should find a pair to hear them!

I think a well chosen $3k retail integrated is reasonable for the R500's. I like MF products.

Thanks guys.

I am sure Naim and the others are great as well.
Did you try the W4S or A5 before buying the M6i? I would still be interested in any comparison.