Yup, those are the best high drain cells for the Emisar 
First they were sold as “Aspire” but now they have those brands!
BTW, and just because I’ve been following the conversation here, I know what you feel about carrying the 16340s/CR123A. Recently I’ve been buying and using my flashlights that use those cells (On The Road M1 / i3 / M3 Pro, Jetbeam RRT01, Olight S1R Baton / M1T Raider) and I know that they are thinner than the 18350s. But they don’t have the same “kick” in power/output and have smaller runtimes.
However, if you want to have longer runtimes and have your pocket with a “thin” flashlight, you can try using 14500 flashlights!
Some 14500 Li-Ion batteries will give more runtime that 16340s and eventually more “kick” on the output. As example, recently a Vapcell 14500 1000mAh was released. So it will have more juice to run than a 700mAh 16340 battery!
It is just a note/suggestion
About CRX, here is his user profile: http://budgetlightforum.com/user/7164
And here is his mods & builds thread: CRX Flashlight Builds
Hope he can help you modding any light you may have under sight