Tube Amps Watts vs SS amp

Yeah- measures worse, sounds better. That's pretty much it in a nutshell.

First off yes, there is a difference between tube watts and ss watts. Tube watts seem subjectively to be about two to three times as powerful, authoritative, whatever you want to call it, as ss watts.

When it comes to driving "these high end speakers" its not the size or cost but the impedance of the speakers being matched to the amp that matters. Any fairly efficient easy to drive speaker, you won't need a lot of tube watts to be satisfied, volume-wise.

Which is why yogiboy is right. Although I would prefer, you are better off using different speakers with a tube amp.

There are lots of great tube integrateds that, matched up with some nice efficient easy to drive speakers, will easily outperform your current combo. 

Or if you are married to the vintage look then let the tubes go. A man's got to know his limitations.