I alternate between a Serpent S120L and a BMI Copperhead 12. Really like the Serpent, very high quality and went well right out of the box, but the BMI is coming along. We run 13.5 boosted which is plenty fast for this old Fart. Have a Speed Passion V2.1 for 1S which works quite well. You might consider the GT2.0, it has the heat sink for TC mod. Most people are using LRP or Tekin. Keep after the 1/12TH, it almost died here, but we kept after it and are enjoying a nice comeback.