Yes, what Dan said.
TT props fill in the gaps with pitches and diameters, saving time from cutting down other brands to almost the right numbers. And they're pretty tough and don't break as easily as APC, or at least my experience makes it seem that way. I don't buzz the grass often, but it does happen now and then. Just did it to a TT 11.5"x4.5" last week and I've still got the TT prop... on the balancer.
Rusty