So far I've had experience with the Smok Xpro M80 (I think I got that right), eleaf iStick 50W, Tesla 2 sub mod, and IPV D2. Basically I've only had good experiences witb the smok and eleaf. The M80 eventually just completely died on me. And so now I have the IPV D2. Which I completely hate. The battery life is pure garbage. Vape on it for 3 maybe 4 hours and its dead. I'm considering going back to a mod with a completely internal battery like the iStick. It never gave me problems, would charge off any charger I was ever around, and had pretty decent battery life. But I think I want to go back to something like that. I don't care too much for carrying around extra batteries and having to buy a special charger for 18650s. I just want something that I can run rdas and rtas (flavor chasing I don't particularly care about clouds) and my herakles plus and still get good battery life. What are my options? I also don't have the biggest budget.