About 2 years ago, I consulted this forum to try to get into vaping and quit analogs. After a lot of advice, my wife and I finally purchased vivi novas and ego c twists (1100). They worked and we have both been analog free for over a year and a half. So, a big thanks to all who helped. Now I wonder if any advancements have been made in the last two years and if I should upgrade. We are still using the same vivi novas but have replaced the ego c twists a few times. Our current batteries are again in need of replacement so I figured now would be a good time to upgrade. My complaints with my current setup: 1. Burnt hits. The variable voltage of the twist is great but it is sometimes difficult to get that perfect balance where I get I good hit without inhaling burnt wick smoke. I don't know if this is caused by the battery, the nova, or the head. 2. Inconsistency as battery weakens. As the day goes on, I keep having to turn up the twist to get the same hit. And when it is really close to dead, full power seems too weak. 3. Battery life. It never fails to die on me when I don't have a spare or charger available. I assume there's no avoiding the battery's short life span but if there is something that lives longer than the twist, I'd be interested.