I started vaping with an rda, but quickly switched over to tanks like my smok tfv12. However I am looking at getting back into an rda due to cost of coils being so much cheaper. I am currently looking at the cthulu azathoth, and the innokin thermo, but I'm not sure which one to get. Any recommendations as to which one I should get??? Or even another rda overall would be great as well. Any information would be greatly appreciated.