I think the tfv4 is a good choice. Tbh though the tank doesn't even start to shine until 100watt. It's definitely made for the higher wattage mods but I still think the ipv4 would be fine with it. Also you might want to look into the uwell crown. Of what I used, those are your two best options for tanks imo. But there are plenty of good rtas out there, some with features that are best geared to what you are looking for. Do you have an idea of what you are looking for in a tank? If you can list them out that would help