I've heard great things about some of their full range bamboos. The problem is there sensitivity; just like matt stated. I think the top of the line creative 5.1 system w/DSP utilizes tang band full range drivers. They could be on display at BB?
They go down to about 350hz. They obviously have a roll off so you'd have to place them on-axis.
AE lost my business when they wouldn't respond to emails. I've heard their 15" IB woofers are pretty mantastic tho.
I've actually had hard a hard time finding high sensitive subs these days. A buddy of mine wanted a trunk sub with a 200w amp, so I was searching. I'll look around when I get home. The most I think I've seen is 85 and 88. There's an old PPI flat piston for sale on DIYMAI believe it's NIB or close to it.