These goggles are the biz. I've been waiting for a goggle company to make a frameless cylindrical goggle for awhile now, and these blew my expectations away! They remind me of the old Oakley Blade sunglasses from the 80s.
The fit is spectacular, though large. They feel very similar to the Dragon APX, which I also love. I wear these goggles with my Giro Battle helmet and they work great together. There is no goggle gap or lens fogging. I have an average sized face and big nose, and I don't feel any pressure on the bridge of my nose like I did with Oakleys. There is zero distortion from the cylindrical lens, and switching them out is beyond easy. Just pop one out, and pop the other in.
As far as lenses, they are incredible. I have the Red Ionized for sunny conditions and the Yellow/Blue for poor viz. The Red Ion is great in the sun and offers enough definition to work in overcast conditions. I save the Yellow/Blue for socked in, foggy lighting.