Hello guys! I've been vaping with my iStick Pico 25 for few months but now I'd like to buy a new one - maybe more powerful I don't know! (Or maybe Should I just buy a new Atmoizer for my Pico 25?) I'm gonna start a poll with few options but if you have any suggestion please just tell me! I was also thinking about buying RDA atomizer but I don't know anything on how it works so i have a very noob question! Is it dangerous? I mean, I've seen that you have to use cotton, coils etc! Many people on YouTube use a thing to check Ohm (I think) before putting atomizer on the ecig, is it necessary?