I know there have been threads on this in the past, but I wanted to start this discussion back up again since there hasn't been a lot of recent discussion about BIO's. I am about to purchase my BIO, and I was wanting any feedback on Keeler Vantage Plus and the Heine Omega 500. Most people just say "Buy the one that feels better on your head." Are there any other comments about durability (this probably applies to older models more than the newer ones I listed), optics, battery life, etc.? Any help is much appreciated!