It would be interesting to see a shootout between a FWD A3 with two winter tyres on the front axle vs a Haldex S3 with four summer tyres up a snowy/icy slope.
Why would it be interesting to see that? Everybody knows what the outcome would be. Interestingly though I have noticed that to a driver with full use of their brain that on a road no matter how slippy it is they are usually alright regardless of which wheel drive. I remember two years back when it snowed so bad we had over 2000 cars abandoned on the Basingstoke ring road, and as I snaked my way through and all of the cars in my 60 year old RWD Ford I noticed they were all expensive AWD cars, X5's, Range Rovers, XC90's and the like which were doubtlessly driven by the invincible school run mums who cannonball their way down the road because they are in a 4WD. There were obviously the masses of Audi's and Mercs driven by business men who were just throwing their cars to the side of the road as well, because jamming their throttle down wouldn't work.
A question for you, have you ever had your vehicle immobalized by the weather conditions and absolutely HAD to abandon your vehicle or get a tow out? Personally I agree that it IS useful and does give the driver a degree of safety, but I don't think it is the be all and end all. ESPECIALLY when we are talking about an electronically operated, non lockable 4WD.
But for the other 364 days of the year I'll stick with FWD thanks, and if it snows so badly that my car can't get to work then I'll leave it at home.
I see your point Hayes, and yes you don't have the constant power loss of permanant 4WD but you do have the weight gain, which IMO is a large factor.
Personally, given all of the other + points I do not think Haldex is a buying point for an S3.