Thanks for the great responses. I never thought about having more torque being helpful in getting off the pipes. For years I used the dependable Futaba S9304 an never had one fail; however, I did start striping the nylon gears when I got a T3. I have a metal gear Jr Z590M. I think it has approximately 95 oz of torgue compared to the aforementioned futaba 86 oz (give or take a few oz. How much is needed for a T4 or a B4?