I had a really bad experience with Odyssey Audio honoring their satisfaction guarantee, When the guy learned I wanted to return the item he became belligerent and it turned out to be the worst experience I’ve had in my 20 years of purchasing many dozens of components. Actually, it ranked up there with the worst customer service experiences of my life. Despite getting a refund eventually, I still lost a good chunk of money when all was said and done.
The aforementioned Benchmark is a good amp, but I prefer the original Parasound A21. The Parasound is warmer sounding but significantly more effortless in its delivery. Perhaps I would prefer monoblock AHB2s to the single Parasound, but that would cost about 3X the money. FWIW, the original A21 sounds better than the 21+ and cost about half as much on the used market. Both amps run barely warm to the touch because of their large heat sinks.
As for Bel Canto, I recency had their e1X amp in house for demo. It was very disappointing, even for class D. I much preferred the Axxess Forté1 integrated in an A/B comparison.
The NuForce STA is a great recommendation. It’s essentially a Goldmund amp for a bargain price.