@Resistance , It’s a great tube mod, very reasonable battery life, 510 so slap any rta/rda on there and battery life was good, even at 45w on the commercial coil. I know the battery isn’t that big, only 2300 mAh, but for me with the other mods in rotation it worked great. Virtually the same as a single bat mod. Charging time was moderately same as with 25R batteries. I had an Ijust as well, was great, but I think I’ll stay with this one if I get to choose. It just has the look that I like, and it ticks the boxes for me. Feels like a solid mod and very well finished. I’ve only had it for 2 weeks, so cannot say too much for durability yet but I’ve had no problems so far, just enjoyment. It’s quite a tall tube, 101.6 mm by 24.7 mm, but I don’t think the Ijust is really shorter, only advantage is that the S has a 3000 mAh capacity. Main advantage with the Twister is you can adjust wattage to suit you, as far as I can remember the Ijust is determined by your coil resistance. Hope this helps a bit, but imho I don’t think you will be throwing your cash in the water if you go the Twister route.