I just recently bit the bullet and ordered a Luxman 590AXII after listening to many different amps. I suppose that if you look hard you can find some poor sounding amps, but nothing I have heard across many typologies sounded bad. In fact, I am rather partial to some Bel Canto models. OTOH, the Luxman sounded sufficiently magical to my ears to spend more money than I should have and to sell off some other kit to pull off the deal. I was looking for a certain sound, not a certain amplifier type.
This is a very similar path to mine, but instead of Bel Cantos I was using ICEPower modules in custom cases. I agree. There was nothing wrong with my Class D amps, and a lot of linear amps did NOT best them at all. The Luxmans did and that's when I bought. Again: The Class D naysayers are prejudiced without cause.