My newest member is the Voopoo and I'd say it is one of the best products I've bought for money vs performance. Top of the list has to be the smok G-Priv since it is touch screen. the Voopoo does the same job as the smok which costs over twice as much. Both handle SS coils very well and the resistance doesn't matter at all naturally within limits. For a smaller more compact unit I tried the Eleaf Pico 25, which I bought a Griffin 25 mini RBA for it's not working with SS coils in temp mode. So far the Pico 25 is a waste of money.