So I decided to order the Shinybox 23. Waiting for the guy to call me back to answer one last question about it.
In addition, I’m thinking about upgrading the tubes in my ART TubePAC preamps. This is a lower-gain tube than what comes stock, which should clean up the sound a bit. This mod will be cheaper though, I’d need 4 tubes so it should be less than $50.
EDIT: there are two cheaper tubes available, that will probably work just as well.