Tony, I'm one of those making the claims Ken mentioned. A quick perusal of threads regarding the Bolder-modified SB paired with an Ultimate power supply should lend all the credence to the concept you'll need.
In my and many other's opinion, the sound of the Bolder SB/Ultimate PS is as good as it gets, or at least it's in the ballpark. I no longer own one, but back then I said I'd have no problem pitting my unit against any digital rig extant, regardless of price. And yes, I've heard a lot of the nicer, high-priced sources and transport/DAC combos available (full dCS stacks, NAIM, Ayre, etc.).
Granted, whether something 'sounds' right is the very definition of subjective, but I think you'll be hard-pressed to find
any audio component - source, DAC, amp, cable or speaker - that's closer to receiving unanimous acclaim and acceptance as the Bolder combo.
Can something be released next week that will embody all the goodness of the Bolder combo, but do one thing or another better? Sure, but then that's
always the case, and I doubt it'll happen anyway.
Thing is, *ALL* manufacturers build to a price point, and in doing so, corners are cut. Conversely, Wayne's approach is to make it the best he knows how
irrespective of price, and judging by my experience and that of others, I'd say he's done a darn fine job. And the kicker is this - because the SB is so inexpensive to begin with, Wayne can sell even the most tricked-out SB/Ultimate PS combo for a tiny fraction of what it'd cost you to find something approximating the quality of music reproduction.
You've virtually nothing to lose in going with a Bolder source IMHO, but there is potentially a great deal to be gained.
FWIW...

-DU