I've heard some good high powered amps, and if I had speakers that required that kind of power, I would own such amps. But, I have personally not heard a high powered amp that I preferred over a good low-powered amp when driving efficient speakers. I've heard, and liked, amps from Constellation, Soulution and Ayre, but, I still prefer certain low-powered amps when driving high efficiency speakers. A local dealer that only sells tube amplification has a Parasound Halo amp that is used for demonstration purposes against the mostly low-powered tube amps in the store. I have not met anyone who preferred the solid state amp when driving speakers of medium-high efficiency (like Audio Note AN-E's).
If I owned the likes of a Soundlab or Magneplanar speakers (I like these brands of speakers), I would own a medium to high-powered solid state amp, and I certainly would be happy with the combination. All systems involve some compromises and making a small compromise with going solid state is something I would do (for higher power I actually prefer solid state over tubes). But, I happen to own high efficiency speakers that I like, so I can stick with the low-powered amps that I prefer.
If I owned the likes of a Soundlab or Magneplanar speakers (I like these brands of speakers), I would own a medium to high-powered solid state amp, and I certainly would be happy with the combination. All systems involve some compromises and making a small compromise with going solid state is something I would do (for higher power I actually prefer solid state over tubes). But, I happen to own high efficiency speakers that I like, so I can stick with the low-powered amps that I prefer.