aacliment said:The M frame folds and the Pro M frame doesn't. I find it easier to put the Pro M frame back on while riding because it doesn't fold. The lenses come in different types and shades for different light conditions. The vr28 and g30 are good all around lenses. The hybrid s shape, i think is the one most commonly used for cycling. Vented does not fog up as much but also allows wind and water in. I have no experience with the zero
I have both the M-Frame pro's and Zero's, I love both although I think the M Frames are slightly better...
The Zero's are nice because they don't have an upper Frame around the Lenses so when you're in the drops and looking "upwards" there's no obstruction to your vision...
Both the M's and Zero's have non obstructed vision to the rear, so when you're looking over your Shoulder to see what's behind they both score 10/10 which is VERY important (to me anyway)...
The Zero's come with 2 styles of rubber nose pieces, one set are small and fit either side of the Nose, the other wraps around completely...
The Zero's let in more wind (and dust etc) than the M Frames...the M-Frames seal everything out so well and don't fog as long as you're moving..stop at the Lights and they do tend to fog a bit, the Zero's don't seem to fog at all...
Both stay in place, the M Frames by wind resistance it seems, the Zero's have Unobtainium Rubber ear and nose pieces, the more you sweat, the better they hold, say Oakley, and it's true!!
Erm, what else...yeah, the M Frame Pro's don't fold as accliment pointed out, which is good, no hinges to break...and yes, easy to put back on....
Both awesome Glasses....very well designed and brilliant for Cycling...
If I had to choose, I would say the M'Frame pro's were slightly better...