I just ordered the Elzetta ZFH1500T light holder (and ZSS1500 QD side swivel) for my Colt AR. I'll probably use my little Fenix PD20 until I decide on a tactical light. I like the tailswitch on the SS2S version of the Elzetta that has the High/Strobe option (rotating the tailswitch cw/ccw selects between the two).

I like the idea of being able to have the Strobe come on first without cycling thru a menu. Are there any other tactical lights with this same feature? Thanks.