I've had a T35 for several years, and love it. Superb optical quality for a second or third tier scope. I was desperately hopng that the T50 would have matching optics but it doesn't. Nice, but not as good as the fixed focus.
I had a Leup and sold it. Too much reaction to temperature, I had to have a whole series of range marks.
Alec's Sightron is very impressive; I had a look through another one last Sunday and the colours of the image just leap out at you.