Great that Lyon and petzl sorted you out,they are great with there customers,never let me down.i find its a "choice of tool for the job"senario.i have multiple lamps being a abit of a geek/home lamp builder and have used different lamps inc duos ,elsplios,home builds,fenix,scurion,fellows in different environments. Personally,if u want a decent do it all,contact Roy fellows or el speleo,cheep for a big hitter,,otherwise think of the environment your taking the lamp into and buy what suits your budget.talk to roy or mike on the other chanel they are a mine of knowlege re lamps ect.