Ruark CL20 integrated recommendation?

I recently picked up a pair of Ruark CL20s. And would like a recommendation for a properly matched integrated.

6 ohm
87 db

The speakers appear to be somewhat inefficient...what minimum power do you recommend?

My considerations so far have been:
Atoll IN-100
Krell 400xi
Musical Fidelity A5...

Price range up to $2000.

you just bought a great set of speakers. ones that get overlooked on these forums too. go for a used perreaux, plinius, bryston, blue circle,or that order. all will have enough grunt and finesse to get the most out of the ruarks.
I was actually considering all except Bryston...

How about a Cyrus 8?

move cyrus to the front of the line