I am currently using a 400 lumen Cygolite Pace/Expilion series light. This is like the metro you mentioned, but has a replaceable battery, so it's a bit more in cost. I've been really pleased with the runtime. I usually run it at the 300 lumen setting, going to 400 when needed. I get 2 to 2 1/2 hours out of it. I do carry a spare battery, but have only needed to use it a handful of times when the days are shortest. The only real issue I've had is the handlebar bracket swivels and that tends to loosen up over time. A blob of silicon rubber fixes it.

I've experimented with the 18650 flashlights and been dissapointed in the reliability and runtime of the models I chose.

A few people I ride with have bought the $30 headlights on Amazon and been fairly pleased. One of them had his handlebar mount break a couple of weeks back during a ride.