I just bought the royal hunter rda and I do not have a good mod to use it on. Right now im vaping with the Eleaf istick 50w & Kanger subtank nano. I'm actually extremely pleased with both products no matter what anyone says. I was looking online at variable w/v devices and I don't know what to get. I don't want to go crazy with the spending so under $65-$80 is preferable. I saw the ipv4s on sale for $62.95. Any thoughts on this device? Idont think i'll get the 100w istick even though its $34. Tesla 100w V2? Dark Shadow by Yep? What to do what to do? Need Help! Snow wolf and sigelei are out of the question. Maybe Boost BBox 160w? I never hear any1 talk about it. Thanks ppl.