Curious what everyone thinks of the BP-21 motor..

I was going to put two of them in the twinstar II.. then use at least an 18 amp ESC x 2? Or would I be better off with say a 25 or 30 amp ESC for cooling?

I found two escs I was considering: http://www.bphobbies.com/view.asp?id...2&pid=A3558009 It says if using 4 servos I'd need a 4.8v rx pack or switching BEC.. i'm not sure if that applies in the case of having 2 ESCs and 4 servos?

I also found this ESC: http://www.aero-nuts.com/product_inf...roducts_id=381 It states there is no Lipo guard.. I'm not sure what that means or if the base unit is programmable or needs programmed?

I was assuming that a 3s 2100mah 15C (at most 15C) would have been enough juice to power this thing better than stock and for up to 20 minutes.. 15*2100 is 31.5 amps and the motor is rated at 13 amps.. or do I combine the amps to say 26 amps.. so having a 15C is the lowest I'd want to go?

Thanks for any help