Hi Dicky, i have the T63 mounted mid of last year and drove round about 5000km with them on. Even a lot of onroad, they still look good, i think another 5kkm could be possible.
I replaced the Tourance because of having a bit more grip when streets are ending. Furthermore I want a tyre i can rely on when its wet. Well, still being very carefull when its wet but i also think i'm much faster in curves than ever

For me the T63 gets a ++. The only (kind of) minus is the noise they produce. One will hear you coming!

Next I will try the Heidenau K60 because there will be a 12kkm tour this year - mostly on asphalt. The T63 likes it more offroad. The TKC I hardly try - the mainstream does that for me...