17" Magnum 500's

I thought I had read somewhere at one time that of all the sizes bigger than 15, that 17 was the size that had the smallest tire selection. That sticks out in my mind for some reason.
the tire selection for my application in 15" is abysmal. basically it's cooper cobra (meh), BFG (nope) and general 400+ tread wear dog water rubber.

i have 15" steelies that i do want to run, but there's just nothing great in the size i need that meets my criteria (need handling characteristics).

going to 17" opens a whole world of possibilities, and cheaper prices.