I only use vertical coils in my Aromamizer and have yet to have a dry hit. It's also allows for larger builds. I'm not sure if vertical coils would work so well in my Velocity rda.
Hey guys, tonight I re-built my rda, instead of 3mm diameter coils I made 2.5mm ones, much quicker ramp up, I got .27 ohm's. Thanks for all your help guys.