Ok, order placed!
Banggood: Astrolux S2 ($25)
Mountain Electronics: VP2 charger ($26) + 2x Sanyo/Panasonic NCR18650GA Protected 3500mAh High Discharge ($9 each)
Gearbest: Jaxman E2 with Nichia 219B ($14) + 2x NCR18650B 3.7V 3400mAh 18650 Protected ($4 each)
Now is wait and see. Once arrived I'll compare the output between both batteries and if there will be no difference then I'll order some Samsung 30Q.
Regarding the SDMini I found a review comparing it against other same sized flashlights. Lumicon does not seem to stand over the others as it seemed on the first pictures, unfortunately.
link for the review: https://budgetlightforum.com/t/-/40490
Maybe I'll wait some Astrolux MH10 / Imalent DN11 reviews.