Anything wrong with Treshold "T" series??

The "new" Threshold Company out of Houston, TX. wants nothing to do with the older "T" series amps. I recently had a nice long phone conversation with Mr. Curtis (Thresholds current President) and either he doesn't know about Jon Soderberg or was unwilling to let me know Jon's services were available.
I can tell you that Jon Soderberg has a T-100 in his home system.
The T-100 is the model which would have the biggest draw backs for the reasons others have stated but Jon assured me that he's never received a Threshold amp that he returned because he was unable to fix it.
The reason I know all this... I've owned a T-100 since Feb of 1994 and thought technical difficulties were being experienced and began the search for a reputable repair shop.

T series has had a long solid reputation for grainfree yet detailed and powerful sound. I spent considerable time listening to one at a friends house and was always very impressed. I had been told that the T was superior to the S series, but never had a chance to compare them myself.
Art

I will stand corrected after reading the above posts, and I will explain why. I suggested a possible bias for a Nelson Pass design as the dealer's reason to steer you away from the T series, however knowing now about the IGBT factor, I think I would stay away from a T. Reason being; I own a PS Audio Lambda II transport in perfect condition, and it sounds great except that the belt driven pulley that opens and closes the drawer broke (the pulley, not the belt), and I can't find one anywhere. The part I need is probably less than a $0.10 mfgr cost plastic piece, yet it prevents me from selling the unit, or fixing it so that it is not a pain in the ass to use. I have been in touch with Paul at PS, and any one who could even possibly help me over the past year with no luck. I ended up buying one of the Sony SACD units 3 days ago so I would not have to be the "elected disc changer", as you have to open the cd drawer with a paperclip. I still love the sound of the Lambda II through the Ultralink II, but it is a hassle and embarrassing. So the moral of this story is, when key components of a unit are no longer available, either buy what "unique parts" that could go wrong with the unit before you buy it, or do not buy it. In HiEnd, it's always a risk no matter what you do, which is why I went with the Sony SACD... but then, I bought the "L Cassette" years ago as well, and still have an ED Beta. Buy an S. Tom