My IPV2 is mess as well and I've never even used it for more than a couple of drags off of an old kayfun with a 1 ohm build. It incorrectly identifies resistances to the point that anything close to the minimum gives me a low resistance message and won't fire. So it's a paperweight. However the new IPV3 is really something. While I hate the bulk and love the praxis, I really sold it short. It's a powerhouse that my mech can only compete with on a full battery. As the day drew on, the devices quickly separated themselves. Both can choke me with vapor, but IPV3 wants me dead lol. While many take the stance of Harley vs. <insert your favorite Japanese bike term>, any serious vaper should have both.