Mikee Mac, for most of the drivers, I'd say ESP should be locked on and more restrictive /ubbthreads/images/graemlins/wink.gif. All the kiddos saying ESP is crap and slows down and they're better drivers than what ESP can do. Well, they shouldn't be allowed to drive without it (or drive at all).
The ESP system has the capability of detecting black ice pretty easily and prevent your car from loosing grip, up to a certain point. Without ESP, you might not be able to feel this loss of grip at all, as it may surprise you on a direct road. Especially with your RWD car, accelerate while there's ice under you -> you'll spinn, while ESP can prevent this (it's reaction time is much lower than yours and can stop the acceleration at once).
Also, try driving in a snow-water-crap on a bad-quality road. Suddenly you'll understand why ESP is so nice to have. It's pain in the *** to drive, when there's no consistent grip available, and sometimes you lose your grip due to extensive amount of water, sometimes due to snow. I personally couldn't match ESP with safety.
And if you want to beat ESP, try ice hockey field. A3, as FWD will understeer, understeer without ESP, but with ESP it will turn (because the ESP can lock one wheel at a time to create some artificial 4wd turning).
- Yak