I have been a mech mod man from the beginning and really didn't care for the high tech regulated boxes. My wife got a 50 watt iStick and it was neat but I didn't pay much attention. I found a really good deal on an ipv1 30 watt and I can tell you I love it! I still have my mech and RDA. I have an Atlantis on ipv1. My coil was .2 on RDA wouldn't fire on regulated box. The ipv4 and Atlantis have upped my love of vaping and opened a new door.