I have only built the Noisy Cricket. From what I have read it's the evolution of the Smoky and Ruby amps. There is not a lot of headroom but it works as a low volume practice amp. Mine does not have a great bass response, it gets flubby quite fast with a lot of bass. However I suspect that is more from my terrible speakers than the amp itself. By design the Noisy Cricket rolls off quite a bit of bass.

I don't have any real guitar speakers, so have only tried it through the 80s vintage general audio speaker that came in the speaker box, and a generic $5 speaker from Jaycar. I have read stories of people getting good results from the noisy cricket when playing into a decent cabinet. So YMMV depending on what speakers you have around.

If you have the parts for a Ruby Tuby and a half-decent speaker on hand then I would suggest that. Breadboarding a Noisy Cricket would take no time at all as well.

All this reminds me that I still need to finish that project...