Best Digital Amps

I have heard Bel Canto on HE 2003 in SF with Grand Utpias and was very disappointed, two years ago heard GU with Lamm and dCS and electronics it was another league.

One side is a great potential to get more power due to the high efficiency but in my listening experience I only heard the lack of one despite even of power ratings.
I also heard about reliability issues with digital amps where the clocking circuitry may often go down taking away the output stage.

I run the Musician II with Maggie 3.6's. Superb,superb,superb............

Marakanetz...My experience suggests that digital equipment tends to be much more reliable than analog. The Carver executes an automatic self-test every time it turns on, and has various other self-protection features. On top of this, the Warantee is five years. I sleep peacefully!

I've only heard the TacT at a show, but was mightly impressed.