Quark Tactical AA. I have a tactical X AA^2 that runs 280 lumens. Small reflector but if is easier to carry... not sure about rechargeables though.
Another option, look for a deal on a Surefire incandescent and get a drop-in for it. 6P, M2, C2, Z2.
Another CR123 solution, Olight M20X. 500...