I am new to GG as I just got my first SS GGTS. I have used the same carto (a 1.7oHm resurrecter) on my Prodigy V3.1, Silver bullet at 3.7V, Lavatube at various voltages from 3.7 to higher (although it is internally limiting) and on the GG I just get better throat hit and huge plumes of vapor. I am waiting on some Nextel XC-116 due to stock wick being nasty tasting with Odysseus instead of struggling with the off flavor. So, I will keep using the carto until I can get better wick.