I know the difference between STC and DSTC but am still undecidded whether or not I should get it. I am getting the 2.4L S40 where DSTC is an expensive option ($2150). The salesman says we don't need it (ie that STC is enough) and that they have never got it in the 2.4 (its standard on the T5).<p>Obviously we never get ice or snow in Australia and our (rigorously enforced) speed limit is 110 km/h). My wife and I are both conservative drivers. Does anyone have any opinions about the desirability of DSTC - has anyone had it activate in non-snowy/non-icy conditions at reasonable speeds?