My experience is slightly different, as I ride MTB for everything. But I haven't run ANY Kenda tire on ANY bike I've had since 2004. Reason: they wear out too quickly. But, I have to qualify that -- the tires I have now, Michelin (Country Dry 2.15 for 3-season riding) and DMR (Redshift 2.25 for winter foulness), are the only ones I've ever had that lasted more than a year. Until '09, I was averaging 5000+ miles per year, about 3000 since, so that may have a LITTLE to do with it. BUT -- each of these tire sets are the only ones I've run DURING those three years! The DMR's will last at least another winter beyond this one, and the Michelins are gonna roll again this spring.
Get Michelins.