ESP in my FWD manual 07 passat saved my bacon last winter downhill 20 dry mph left -> uphill 20 dry mph right with a stop on an incline and ditches on the side. Ran out of inertia 3/4 of the way of the hill, ended up in 1st gear, floored, let the car control the brakes and throttle, got me the rest of the way. I was passed by a tow truck who I saw 30 minutes (.5 mile) later rescuing an ODOT salt/plow truck.
Wife will not be on time to work if we get snow like that again.
edit: have only turned off ESP when stuck in the driveway, it lets the wheels spin. I wonder what the difference between esp and TC is? I can break traction by going WOT once into 1st gear (not engaging 1st, just winding it up)
I did manage to survive a spirited drive on OH State Route 26 (dry conditions) without noting any interference from the car. The stock car is capable of more than I wanted to do on that day as I am not familiar with that road. We drove each way in under an hour apiece.
I have made the tires squeal taking non-blind turns on roads I know, and experienced understeer going into the esses at Mid-Ohio with brand-new tires. That was fun!
I just leave ESP on, it is a fun family car, not an M3.