This month's Top Gear Magazine tests the S4 Avant against the Volvo V70 R AWD and the MB C43 AMG Wagon. S4 comes out first by a fair margin. MB has too much power for the traction control to handle, V70 has crude suspension, only the MB has a better-quality interior than the S4 but not as nice as the Audi's. The S4 wins on just about every count... Tom