My favorite is the Michelin M12 front with an S12 rear.The S12 front is good in the goo but doesn't cross over well to hardpack like the M12 does.Having said that,never use an M12 rear-pos imo.Interestingly,the S12 rear is my favorite while the M12 rear is my most hated tire.Go figure.A dunlop 756 front is also a good universal tire.The 756 rear is good too but the performance drops quite fast as the edges wear a little.