Motorkhana I'll take ABS...
I lost a run fractionally because the driver pushed too hard, locked a tyre and understeered... Gimme ABS and I'd have owned on that run.
As for ABS in motorsport, there's a few guys on here who love it to death for racing, depending on the car, yet certain ABS systems are very bad as they have been known for completely shitting themselves if you're braking, and lift a tyre as one wheel will stop, so ABS kicks in.
But for having fun with, since you haven't said street or track, I'd be using ABS.