DSTC hands down, though I believe that (in addition to improved response rates Cattlecar mentions) Haldex 3 also transfers torque more quickly. A small improvement to an already good all wheel drive system isn't worth nearly as much as having active yaw control. Not only will it save you in an accident, but it is also highly useful when driving on curvy roads in slippery conditions.
2007 Volvo XC70 | Silver / Black | Premium & Climate Packages, Steel Cargo Barrier, Cargo Cover, Trailer Hitch, Parrot Bluetooth, USA SPEC iPod Adapter, 4-Way Pioneer Door Speakers
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