i had never even heard about sunwayman before i joined this site. it was a tough choice between the v11r and the m11r. i think in came down to the fact i like the smaller size of the m11r and i also like the preset outputs. this will be my every day carry replacing my old gerber infinity ultra. i would like to thank selfbuild for the great videos on these two lights. i also got the AA extender for it so now i got to figure out what batteries i want to run in it. for anyone who has this light, what batteries do you prefer in the m11r? I like this site but i think you guys are going to make me burn a hole in my wallet!