Sorry if the topic has been repeated before, but in my experience with headlights, they always crap out on me. I never ventured beyond the $20 light from walmart, or the cheap ebay stuff, primarily because they're easily replaceable, and use simple NiMh batteries. However, I've had these lights go out on me or change modes over bumpy roads while running full batteries, which tells me the circuitry in them are terrible. So I'd like to get one of those good ones with a Lithium battery, and a simple 2 modes (constant beam and flashing). I just need to be seen on the streets, and I don't need something powerful that'll light up the whole path, considering I don't like to go out at night anyway.
Actually, I would like to stick with regular AAA and AA batteries. They're way easier to replace, and I don't want to be stuck with an integrated battery on the cygolite after 4 months, when it's lost half its capacity. Also, I have a smart charger that does a depletion cycle, and prevents overcharging. That's a better option than to have a Lithium battery sitting in a usb port overnight, with no overcharge protection.
(I've overthinking this I know... I just have small pet peeves)