I have more flashlights than brain cells. Being a LEO on night shift for 11 years you get a collection as you keep upgradin to the latest and greatest. Currently I'm running two ASP lights, one is none. The ASP Turbo USB and its lil brother. Both are rechargeable and use a micro USB, which is super convenient since my phone does too. They can also run on CR123A barriers as well which again is super handy in my line of work. They are single mode but I prefer that for work. I have several multi function lights but I hate being under stress and trying to operate it, my holster, pistol, finger, mouth, and brain. They are also in a great price range and come with a really nice zip pouch with home and car charges with a retractable charging cord. I picked them up on Amazon.
I would add a link but I can't find the USB Turbo model I have. It's a bit over 600 lumens but all I'm finding is the 300 lumen regular model. Strange. :-/