I think the Emisar D1s(s version is latest and around 120kcd for $40) is a little big for pocket carry, maybe fine for a coat or large pocket. The D1 is compact for its performance in 18650 form, drop down to 18350 then real compact.
Emisar D1 next to a 6p you may know
A lot depends really on what is light weight, also what kind of throw you are going to be needing for specific application in mind. The D1 has a little over 40kcd, which is very impressive for its size. Available in 3 flavours of xpl HI, 4000k, 5000k and 6500k..............pick your poison! UI is great, ramping with short cuts to max/min, bat check and even adjust driver temp setting. Very easy to use...........
Although not a dedicated thrower, if you want small and light weight, check out some zebralight offerings....................within reason, pretty much the smallest lights available. Awesome form factor, again great UI and soon to be released sc600w mkIV xhp35 HI , NW flavour is very nice and pleasing on the eye if you like a neutral beam! All subjective, everyone has different wants and needs, no rights or wrongs just simply preferred.