Hitec's 5955TG.
THE ONLY WAY TO GO!!! you may get sticker shock @ $120 a servo, but they will last you. I have run these servos in throttle and brake in Buggy and Truggy. 333oz/in you can't go wrong here...and they are fast...don't quote me here, but i beleive .15, and as the TG implies in the name...Titanium gears!!!
Simply the only servo I will ever buy!!