I haveuh 3no 4 Sigelei mods  start with the smallest  the Sig 75 watt which was my very first Sigelei mod  I was so impressed that I went on to get the Sigelei 150 watt mod which was my first high end mod  then the Sigelei 150 watt TC mod  and finally the Sigelei 213  that was a gift from my editor  I write for Spinfuel