I have the Craftsman. I don't change wheels at the track, just use it at home though. It works fine in breaking lug bolts free (wheels torqued to 96 ft-lbs), but I would note that the battery is well charged. So I can't really say how long it might last with multiple sets of wheel changes as the battery discharges. I bought it because it was cheaper and already had other Craftsman C3 tools/batteries so it fit for my usage pattern. For track duty, I suspect a heavier duty one might be a better choice.
Golden Gate BMWCCA - Car Control Clinics
'13 C4S/'12 328i/'04 GT3
Past: '09 M3 DCT/'03 M3 SMG/'95 M3... missing an E30 I suppose...