I didn't buy any of the 3 cell lights for years, but within the last year, I bought the M91T and the M91BW. I like them both a lot. I use the Hound Dog 18650 neutral at work, but around the house and the back yard I am loving the M91BW. It is the only warm tint light I have. I like, cool, neutral, and warm depending on what I am doing. I bought a couple rechargeable IMR AW button top cells at a vape shop in my area. They work great. I have the crenelated bezel and tri cap. It is one of my favorite lights. It is much brighter than the M61 and has a really nice low mode. It also throws farther than I thought it would. I imagine it does what his specs say on the website. I am very glad I bought it. I don't consider it overlap. I think I read someone say it is like an m61 on steroids. I would say that is pretty accurate. The spill and the hotspot is much fuller.