Hi Keith,
With the full face, I use a regular pair of very dark polarized sunglasses. Why polarized? Here in sunny South Florida, you get glare off everything. These help cut glare dramatically.
Riding with the half shell, I use Garney goggles. I have the Boulevard model which comes with three interchangeable lenses (clear, yellow & dark grey and I only use the dark and clear), comes with regular eyeglass frames or headband, case, and a prescription lens insert for $49.
I used the regular frames but prefer the headband and even at highway speeds these guys are very comfortable.
http://www.britishcycles.com/generic254.html
