The R-11 is the least hold sensitive of the three, making the best choice for benchrest shooting. But hey I could be wrong.
I have shot the TX200 off the Bench and was not happy with the results.
I should have time on Thursday to shoot (all three), so I'll try to gather as much detail as posible about the placement and whatever else.
I'm really looking hard at the RWS 54 (detuned) as the Benchrest springer or a hot running FWB 300.
Bart