In heavy stuff I would go with the SC20. It will take alot more abuse than a T and with the 12' beam its more forgiving.
Seriously? I've seen more SC20's have fitting and hull failures than Tornados (I can recount three critical SC20 issues - 2 hulls peeling up at the shrouds and one beam/hull retainer pin failure). However, to keep that in perspective, the SC20s that suffered damage had a good bit of age on them.
With regard to websites, you'll have a hard time finding much on the CF20 as it is pretty much a custom one-off that they're working the bugs out of. You can find out more about the Supercats at
www.aquarius-sail.com