if its just for a 10th buggy (or tourer) then the 1251 is a great servo and can give the extra space needed in the tighter cars. i know someone who runs one in a 2wd sct and has had no problems with it and have also seen a couple in nitro buggys but thats probably pushing it a bit,
the 1258 is a brilliant servo good speed and lots of torque, the 1256 is a torque monster, and the 1257 is a nice blance between the 2.
