So I've been vaping mech mods and various rda's. I now want to purchase a good box mod for around the $100 budget. I'm currently looking at the Sigelei's and IPV 3. I've looked at reviews extensively but with everyone's own individual experience that contradicts each other I can't decide. Are there any other box mods that I should be checking into? Also what is a good Kayfun type tank that is easy to build and doesn't leak without having to make modifications?