IMO, I got tired of the V12s. They're good for the money, but the sidewall is too soft, grip gets worse as it wears down, and it doesn't last that long. For just a little more I'm super happy with the Continental DW. I think 305s are available now. My current setup is 265/35 and 285/35.
[EDIT]
305/30!!!
http://www.tirerack.com/tires/tires....DWXL&tab=Sizes