My experience is that it's my go to device, has never wronged me, and never ever failed me. Reos aren't cheap and they're a little old school, but I haven't found anything that both satisfies me, and has such a maximum level of convenience. Grab and go, no worries. Easy filling, easy battery changes, user serviceable, replaceable parts, what more could you ask? Plus the owner of the company is on the forum too. I've had conversations with Rob in multiple threads