I’ve also got the gen and the aegis x.
Both fantastic mods. The aegis is a chunky mod, it’s heavy but not too heavy. The gen is gorgeous. The finish is spot on. I find battery life on the gen better but that’s because it has a tiny screen. Both are great and you won’t go wrong with either.
Also use the recommended molicel batteries from fogstar and they’re great. Fogstar CS is spot on too.