Decame

I know this is has been beaten to death but I have serched the thread for an answer to my question and could not find what I am lookin for.

I am in need of new rear tires for my C55. I drive a lot and just can't no longer manage the expense of two sets of rear tires a year. My question is what kind of tires should I investigate that offer a compromise between performance, longevity and price of course. I am currently runnin 265-35-18 Sumitomo H-III

Thanks