JETBeam RRT-2 (R5) vs. Fenix TK-15 (R5)

I lost my Fenix TK-11 R2 and need to replace it . I liked the spot beam and throw as I work in Paper Mills often and need a good thrower to cut through steam and water mist. I'm looking for a replacement with similar "throw" and am considering either a Jetbeam RRT-2 (R5) or a Fenix TK-15 (R5). I typically use AW 18650 cells. The only thing I did not like about the Fenix TK-11 was the twist bezel for low, as it required two hands. Are spacer rings available to replace the grip ring? Any comments you have would be appreciated. Thanks