So i love the bigrock in many ways. Great size to power ratio, good durability in many forms. But the few flaws that the arrma 3s line have beat me down enough to part ways. Drive shafts, slipper clutch and diffs. Always seems one of them fails every run, tired of throwing money at it. Will be trying to sell to recoupe some money and will be going to a maxx v2 or corally sketer..