I've used both the T-amp and the Super-T with my Klipsch LaScalas. Both sound great, but the added connectivity and audiophile touches (nice speaker binding posts and RCA inputs, better volume pot) make the Super-T the prefered option by far. I think it has the edge sonically too, but that's a gray area.
BTW (and I may be starting a whole other dialogue here), I made the switch from SET to Tripath for a brief period, but am now firmly back in 300B SET land. I find the triode amp much more involving. The SI amps seem to dazzle when you first hook them up, but the honeymoon ended fairly quickly (at least for me)....listener fatique, sizzly top end, lack of tube bloom, blah blah blah. I've tried some of the tweaked Tripath amps available out there as well, and had the same response... initial reaction of "wow!", but then became less enchanted. I now use the Super-T with an in-wall pair of Fostex FE127s for a "house" system, and I like that combo just fine.