I work carry a Leatherman Serac S3 which is small, light and has varying output levels. I bought it at the factory store on clearance.

It replaced a Leatherman Monarch 500 (the old one) which was very robust but heavy. Not regulated either.

That replaced a Surefire 6p which is one overrated light and not up to the knocks I give my lights.

At work we have Pelican Sabrelites which are MHSA rated but have a poor light output relative to a modern led light. The battery holders are fragile too but Pelican replaced a bunch of ours under warranty without question.