What is the Best Integrated tube amp you heard


I just want to know what is the best integrated tube amp you have ever heard and with what speakers you were listening to it on.

The Best one I have heard is a Sam Kim Heathkit 151 creation from Sam's Audio Labs in full triode at 7 watts per channel with Altec 604d in cabinets
stevehifi
Mastersound 845, as described in the quote below (lifted off the net):

The Italian designed Mastersound 845 Reference stereo integrated amplifier uses parallel Billington Gold 845 triode tubes to produce 40 watts per channel. New old stock (NOS) Tung-Sol 5687 blackplate for rectification and NOS Raytheon 7730 for pre-amplification round out the tube compliment. The 7730 is a premium version of the 12AU7 made only by Raytheon as it provides very low noise and heavily plated gold pins. There is zero negative feedback in this design that weighs in at 50 kg.

Escalante Design Fremont speakers and front end was Wadia. Great sound but probably not the best speaker match for the Mastersound.
Not suprisingly, everyone quotes there own amp, so I will too. My Viva Solista 22 watt 845 SET is the best amp of any sort, I have had in my system and I have used some good integrated amps, Karan K180, lavardin IT included.