Been on holiday, and took my ssGGTS/UFS with me and my aluminum GGTS/AVS as backup. Well, I broke out my backup and decided to use it. I had honestly forgotten how well this thing vapes with a 901 atty in it @3.7. The flavor is better then the lr510, it makes awesome vapor, is light as a feather in comparison, and the switch that is on it is easier to engage then the newer one. I have been vaping it since. Of course my SS setup is not going anywhere!!!