It's hard to say even with that said. If you are using sub0hm tanks, you are going to want a 2 mod batt with longer runtime... You need to decide if Temperature Control mode matters to you or not, and that will send you in various directions, etc. I use a Steampunk Nano 120 tesla mod and it's great for *my* needs and I love the vape, but it's not for everyone, and all metal so quite heavy. I'd suggest looking in the mod section of the forum, maybe asking the question there, as well as reading some threads about various new mods (or even slightly older ones, they will have come down in price) and seeing what appeals to you, and what features you like. Best of luck! If you have a vape shop anywhere near you that carries a decent selection of mods, may even want to travel there and inspect them in person. You can always buy online if you want, for less $$, but sometimes it's nice to be able to look at a mod in real life, as it were. Not everyone has that option, but I think you will wind up with enough decent recommendations to get you going. Best of luck!
Anna