I'm amazed out how much vaporizers have improved over the past 6 months. I still remember the RN4072 pen style and 901 atomizers that crapped out after a week and the hassle it was to always have to buy spares.... I know that this still happens at times but look at all the new models and technologies (manual switch, sealed batts, passthroughs) that have come out since and the improvements in vaporizer and battery reliability (My pen style atomizers are lastin up to two months now). Is this evolution the result of the consumers wanting more and better and the competition of the suppliers and factories? Or is it just an evolution from the factory side?