anyone run any other brushed motor other than the titan 12t thats better? my sons slash still has its original titan motor and is still working. tops out at about 20mph with 90spur and 18pinion. might be a little slower now bein that its a year old but i do have a brand new titan already broken in for him when his current one craps out. the topspeed i think is good for him right now but i would like him to have a little more acceleration and torque off the line. after he goes through these titan motors i was thinkin about just putting in maybe a better brushed motor. he isnt ready for brushless yet. the only brushless system i would consider for him is maybe the hobbywing 9t system. is the hpi brushed motor better?