Hobbywing Max10
Hobbywing Max10 G2
Hobbywing 10BL120 G2
Castle SW4
Castle copperhead 10
All of those are my recommended BL combos.
A new car would probably be better. I agree with @bill_delong with anything Arrma. 4wd for off-road is a must. My slash and rusty (2wd) just spins in the grass and...