I've been wearing a pair of Wiley-X for 3 years, they're light sensitive so they darken in the sun but they definately don't darken as much as they used to. I'll try Panoptix next when I can afford them.

I find a bit of a wrap around design, the inner foam cushion and elastic headband are extremely helpful at speeds above 60 MPH.

 

Light adjusting lenses are always somewhat less effective when the lens is prescription and they're never quite as dark as sun glasses can be.
You'll have the same experience with another brand. Also, the effect lessens even more after a few years.
I also have a pair of Wiley-X that are light adjusting. I loved them for about five years but now use them for lower light riding. Either way, in my opinion Wiley-X is a top quality product.
Having a need for Rx lenses, I've had to work with their C/S department. I've never had any company work so hard to get it right. I'll never consider another brand given my experience with the company and the product.

 

I wouldn't have anything other than polarized.

Finding the 'right' set of sunglasses can be challenging. I have several, but wear the Oakley Flakjacket model mostly (polarized). I also have WileyX Revolvr style as well. Both very good glasses. I've heard a lot of good things about Gatorz, but have not tried any of them.

 

LOCS- any kind of style you want and only $9.99. I buy 'em 3 at a time. have been wearing them and their goggles for years, they work great and look very cool.

 

Brand and style are a personal choice, but I offer these tips in general:

Polarized lenses are the best. They will reduce glare from horizontal surfaces. (Make sure you have no issues with your windshield).
Avoid rimless lenses when riding in the rain. Without a top rim, the rain will run up the lenses, over the top and right into your eyes. The rim helps direct the water to the sides of the lenses.
Keep a set of yellow lenses for night riding. They really do help make things look brighter.
Use a strap that attaches to the end of the arms and goes around your neck. It wil secure them if they fall off your face, and they are very convenient if you need to take off your glasses but don't have a pocket handy or a free hand to hold them.
When you buy your glasses, try them on while wearing your helmet to make sure they will be comfortable while riding.
But most importantly, make sure the lenses are reflective or dark enough so the girls won't see you looking ;-)

 

Got my first pair of Panoptx Convertibles 9yrs ago and there still in good shape. Replaced foam eyecup once in 9yrs. Bought a new pair of Panoptx/7Eye Churada's polarized gray for Sturgis strip this year. Best most comfortable ever had.

http://www.7eye.com/products/index.php?type=motorcycle

 

I don't like polarized lenses for riding. They do distort the image some when looking through the windshield and it's even worse if you have a helmet with a faceshield.

 

I've got the Wiley X Jake (Light Adjusting) glasses. They fit like a glove and the lens transition to tint perfectly.

 

I'm a Smith fan. Their lens technology is cutting edge. Polarized lenses that are extremely lightweight, optically correct and impact resistant. Their products are readily discounted across the web and their warranty is unbeatable. Its lifetime, you don't have to be the original owner or submit any paperwork; they don't ask any questions and if your model is older and out of production you can choose whichever current model you want to replace it. Woo hoo!

 

I've had good results over 5+ years with these guys: www.bodyspecs.com . Good quality but not as expensive as others.