I was super excited for the iON. I went to Zermatt for a day of skiing. The conditions were low light in the morning, sunny in the afternoon. The positive factor is that you don't have to attach anything to your helmet. The negative is that the camera films the snow more than anything else. Skiers have to look down otherwise you will probably fall. I (personally) like to see the whole background - mountains, clouds etc. - I don't get that with the iON. I also had issues with the microphone... it picked up my voice well but doesn't eliminate the wind noise at all. I was skiing at speeds near 90kmh. The lens on the goggle is superb. I saw everything in low light just fine. The lens adapts well to the Sun but it isn't Polarized. Zeal (I'm sure) will fix this problem in the future. I would also advise an external microphone component in the next iON. I ended up returning the goggle. I would say the iON needs improvement. C'mon Zeal... get it right the next time!