My last and only high end light to date was three wks ago . Its a Quark AA. I got overwhelmed with all the information on cpf and having already narrowed it down to the Quark AA , Nitecore D10 , and the Lliteflux LF3XT i decided to just jump in and get the new kid on the block. Great light. I plan on getting a couple more lights for truck and house so we'll see what happens. Am waiting on some 14500's and a charger at the moment.