Tube amp suggestions mate with Audionote pre and Tannoy gold monitors

Hello.
Since purchasing my AN m3 line and 2.1 DAC I have fallen for the tube sound. I presenly power with The Fisher sa16 el84 and or a  Linn LK280.

I would like to go to the next level so I am looking for suggestion up to about 5k

I have considered 
ANK amps
Citation ii

Thanks for any help