Since at the topic of sig100w, thought id share my opinion here too. I have the sig100 v2 for a few weeks, and loving it. Since getting it i havent picked up my stingray. Use it on kayfun for all my all day vape, also on my dripper when i want more clouds. Surprisingly enough, im also enjoying my nautilus w/ bvc coil much better when i used to vape it on my svd. Battery life dependent on your build / settings. Kayfun .6 - .8 build running at around 30w / 5v, gone higher but its my personal sweet spot, i get at least 2 days without charge [chain vape]. Drip mode running 70w+ w/ low builds, youll see that battery go. Personally i havent really gone all the way to draining my battery so i cant truly say how long they last. Can be a little annoying having to adjust the 510 to make connection / getting a flush look when hopping from atty-atty. Just be aware of that reverse threading, so far i havent messed up the original pin it came with. No issues with the fire button, yet, hopefully will not have to experience this haha. Magnetic back plate is holding up very well. Havent used or felt the need to use any of the screws, besides no screws = easy battery swap. Best thing i can say, even on drip mode, i can easily build a higher resistance and still chuck coz of the power it supplies. Safer build but still able to enjoy mech style vapor. No need to go crazy sub ohm, safer and longer batt life.