My Smok acquisitions started with a TFV4, soon followed by a pair of TFV4 mini's. Those all worked so well, had to try the TFV8. As part of my prepping, picked up a TF RTA G2. All that worked so well, just had to pick up the Alien kit with the Baby Beast and thought I was done. But alas, they came out with the Big Baby and if that wasn't bad enough, put the G-Priv 220 under it. How could I resist? Best part, everything just works very well! But it's best I stop looking.