Thanks everyone for opinions. I woke up this morning having stayed up til 2am thinking about what I should do. My birthday is coming up and the itis was keeping me up. So, when I could not hold my eyes open any longer I went to bed and slept on the decision I should make. When I woke up, I said to myself, you live only once, why not try out both tanks and see which one you prefer? With the iStick 30w, I could not get past 17 watts without my juice tasting burnt. I knew that with the Crown, the tank is really designed for higher wattage mods. So, I made a purchase for a Sigelei 150w TC and went to my local B&M and purchased the Crown in preparation for my birthday gift to myself. I can say that with the Crown, I can now vape at 30 watts on my iStick and it's not boiling hot. I have the air set to it lowest because if I set it any higher, all I get is cold air. The taste is amazing. It does use a lot more juice. I can't wait until the Sig arrives to really see what this tank can do. I cannot try the Ni200 coils yet, but I will on the Sig. I'm still undecided on rather or not I want the Crown RBA deck. I do want to try the coils first before I buy the RBA deck. On the Sub mini, the RBA deck gave amazing flavor. But with the istick 30w, I couldn't take full advantage of the subtank mini. Now that I have both tanks, I can soon make my decision on which tank I prefer the most. I think what I'm going to do once my Sig arrives is to try the Ni200 on the Crown, buy some 26 gauge nickel wire (if I like the Ni200 better than the standard coils) and build it for the sub mini. I'll be able compare the taste between the two tanks and make a final decision if I should purchase the Crown RBA deck.