If you want your amp to make every recording sound "smooth" and "musical" the 3060 is probably not for you. A lot of audio people want that, I do not. If the recording is smooth, say Ella Fitzgerald's Verve catalog, that is what you hear -- but everything on the recording. Many recordings have both smooth, rough and everything in between tracks, particularly large scale orchestra and opera.
If you want to hear the limits of the AlexxV, the 3060 will get you there. None of the other amps will.
With no disrespect Chuck I feel that you present a false dichotomy driven by personal, subjective preference. It is not the case that only the 3060 is in some objective way correct, and that any other amp will "make
every recording sound 'smooth' and 'musical.'"
I appreciate that you are more of a "hear everything on the recording, warts and all, just the facts" type of audiophile, and that is great, but many others have a different high-end audio objective and prefer a different sound. For your personal sonic preference I think you have put together the perfect system. This is why you are so happy with your system, and I truly am very happy for you!
There is a large and wide spectrum of sonic options and varieties between the coolness* and control of a Boulder and the "make
every recording sound 'smooth' and 'musical'" of, for example, a syrupy old-fashioned tube amplifier.
Some people want to focus on hearing music, and not hearing the technical and frequency response "limits" of the loudspeakers.
*I have not heard the 3060 myself. But I found other Boulder amps to sound, to me, on the "cool" side. I tend to hear things similarly to Shakti, and if he finds Boulder to be on the cool side I am sure I would concur.