I have had one (Suncoast) since the stocker spun into two circles. Its seen many hard 15-25psi boosted launches and 1/4 mile runs with TC locked. Some where around 650hp now.
I have one and no problems so far. Only putting 337hp through it, but i do drive it every day and haul with it. Done some 20psi launches with no problems so far.
One thing for the fast guys to keep in mind is that there is a new SFI rating for flexplates by nhra and ihra and the laminated are not approved for it.