...I did own a wonderful Zephyr Regent that was constructed much like the high end jazz boxes back in the day. It had no interior bracing, just a completely hollow box, in the style of a 175, and a single HB PU at the neck.
Great guitar, period.
I sold it for $300 out of sheer destitution. It got me out of a hole, but I'm looking to get another. They can be had for under $400.

Heard the Joe Pass and other similar Epi boxes are pretty dang good too. If Duke Robilard is willing to road gig with them, they must have enuf of the goods. And I think he uses the Emporer as a main.