Buggtussel speakers: a "sleeper" hi- end spker?

Anyone heard Buggtussel speakers made in Michigan(?)Their ads appear in several mags, and their website provides some interesting design and driver information. They use a transmission line bass which (in my experience)produces the tightest and best low-end. Is this the "sleeper" speaker(line) of the 21st century, or just another bunch of empty boxes??