I have a BV2S and not real impressed! I have had it for 3 seasons and a bunch of little problems. Fogging with regular lens, upgraded to electric and now is frost free, but now is clouding. Mask skips and ratchets, visor won't stay up anymore. Just a cheaply built helmet for a lot of money. My daughters $150 Zoan helmet has electric shield and never has it been plugged in. doesn't fog, even in -25C temps.