I might have mentioned the Koopor Primus 300W Triple cell box mod and how it's $54.99 on some sites and was taking a leap of faith given the poor SMoktech mod track record, but Smoktech emialed me that there won't be any firmware updates which will require a vendor[s assistance like the Kooper Plus did due to tremdous negative feedback by users around the world and also in such large amounts of users. The fact that so many of the devices sold was enough to take the consumer's angry, albeit future mod sale dependent "adivice" as serious as a heart attack to put it in my own terms. The Updates on the Koopor Primus 300W are already ready for my Windows 10 PC to download via a usb cable and users with the newest firmware version are swearing I should, me personally, just buy the Koopor Primus and forget the Sigelei 213 mods and H-Priv (which is a but too small and not as attractive as the slightly copper tinted stainless steel color Koopor Primus since I already buy 3 18650s each time I order (because I own an RX200S), and will be charging with an XTAR VC4 in a day when it hits the mailbox. I love the 4-5 simple names for the ramp up output modes in the corner and the dots which light up the appropriate number depending on vape "blast" power option as I call it, and that along with all three cells running parallel, my personal love for the original Koopor Mimi 60W device design in the Stainless Steel color with vents which provided enough of a grip was one of the most attractive mods I've ever had in my opinion which isn't a commonly shared opinion. Regardless my buddy spend 80 bucks on it at the local store because he's a millionaire which is irrelevant but might shed light on our obsessive purchasing of similar mods every week...so I have reached 200W with HB4s which have 4800mAH total in this mod since they're three pararllel cells, 30amps and great lasting voltage and all that stuff that drops off in batteries often times too soon, HB4s don't drop off as at all if I didn't know better. I usually swap or recharge cells at 37% remaining life so it's aweomse mod and TVT8 Cloud Beast V8-T8 coils are nice but I picked up a single V8-T6 which is my favorite and I gave the octuplet coil to my buddy because he even said what I knew it would be...too hot at the wattage needed to produce enough vapor and flavor worth our time. I like the cooler vaping at high wattage similar to the TFV4's TF-T3 Triple coil at .2ohms which I used 90W with back in the day. The clouds were exactly as insanely i,mpressiive with the most tasty Kanthal coils I've used. !60W mods should reach no problemo with LG HD4 25 amp 2100 mAH but total of 6300 mAH on this mod or LG HB4s at total of 4800mAH. The HB2s Mooch said "drop off and aren't at powerfulin general and HB6s are very nice for the first half of the charge but aren't for my ohms law calculation I did today. Those are 32-33amps continuous in fact so I think those HD4s which are the newest LG cells for sale are plenty since Mooch says they are at the very least as good as Sony VTC4s and only the HD2C 20amp 2000mAH cells definitely BEAT OUT the VTC4s but I feel safe vaping 200W with VTC4s. I wanna try each of the 18650s since I bought them all (LG's latest releases) and see if the HD4 cells with the highest mAH (2100mAH but times three in the Kooper Primus...6300mAH) and ennough lasting voltage from the full charge to last a long time in that mod vaping high wattage coils with high resistances plus I'm a chain vaping nutjob so things are looking great. I wonder who and how soon that person or people will challenge my 100% certainty of the Koopor PRimus working JUST as I described it. No mistakes, no memory issues, no benzo forgetfullness side effects as most times, nothing wrong with my praise for the mod. And if the future updates cause issues, I'll just reinstall the current software I used today on my buddy's machine. If it works good now I'll keep it this way and not risk bricking or glitches.