The TLR is a more unique bike where you will see more of the 929's. The 929 is gonna be a good amount faster, not just a tad. The tiller will run around the speed of a fuel injected gsxr 750. The TLR is a lot heavier and bigger where the 929 is gonna feel more like a middle class or even a 600cc bike. Both bikes are beasts in there own way. I think your best bet is to go test ride them both.

The Tiller is a big torquey monster.
The RR is a little bullet that packs a big punch up top.