since it sounds like u want to have better handling, u can probably save money without the TRACS. i actually leave TRACS off all the time, except maybe occassional snow treading (still didn't help on a slight uphill at full stop with snow tires). most stability controls systems on the new cars are much more sophisticated than simply applying brakes on slipping wheel up to only 25mph. it's actually pretty hard to "spin" an 850, it's FWD and it's got a pretty heavy understeer dialed in. the only time i ever induced an understeer was turning too fast on a corner and keeping up the throttle, plowing quite a bit, but then letting go of throttle eased things up a bit. some of the 850 wagons don't even come with a rear sway bar. probably the only time u'd spin is if u intentionally lock up the rear with the hand brake :). save the money on TRACS and go with the tires/strut tower brace.