Here I go again, wandering off into the depths of verbosity. All you really need to know is in the third paragraph and the bulleted list. I wasn't sure if this would be the best forum to ask, or should it go to the tanks forum. I seem to be going from the wading pool to the high diving board in one step. I've been happy tootle-puffing my way along for the last four years, using the same equipment most of that time - Innokin VV v3s with Anyvape Davides on top. The VV v3s were especially good for me to use with my very wonky hands* and I liked the airiness of the Davides. I did venture out as far as MVP 3s, one of the original ELeaf ISticks** and an Innokin Disrupter that I won in a contest, but ended up back with the VV v3s and Davides each time. Well, it's getting to be really hard to find either any longer, so I started shopping again and got very good advice to try the Wismec Reuleaux rx75. The no button squeeze firing method and good hand fit more than made up for the weight.*** Then I realized that the RX75 was already being replaced by bigger, higher wattage, multiple battery, heavier devices, and I now have one with two more on the way. I'm a retired techy so I figured I'd be trying the temp control at some point just because it was there - a new technology to play with. Getting (finally) to the point of this thread, I started reading up on temp control and decided it makes way too much sense to not use it. The problem is that the Davides (protank coils) also needed to be replaced. I can't make my own coils, so I was glad to see that there are choices out there that use manufactured coils made from TC appropriate wire, but I have no idea which tank to get. So, questions: Ohms - or the lack of them. A lot of these coils start at .5 ohms and go down from there. Is sub ohm a good choice with TC? I'm not chasing clouds, I'm not going DTL, so I really want to stick with longer 510 drip tips. Any recommendations for that? I was told that there were appropriate coils for a Nautilus out there, but haven't seen those yet - where might I find them? I have an original model, not one of the newer ones - is that a problem? Cheap would be nice, but not to the exclusion of good. I was looking at subtank minis at Fasttech and the lowest priced original didn't have a removable drip tip. There seem to be quite a few top fill tanks, but how fussy are they to open and shut? I love the idea, but I can't even button shirts or open child-resistant caps. I'm a high PG vaper, so which are the most/least leaky? It looks like the drop-in coils may still need to be wicked by the vaper - is that true? * Wonky hands as in I can't feel much with them and have very limited control. I found vaping when I got so I couldn't hold on to cigarettes, causing a really immediate health threat. ** I was one of the tootle puffers who couldn't get the wattage low enough on the original. I might have been willing to give them a try again, but they were so adamant that there was nothing wrong that it left me really sour on the company. *** One advantage of not being active is that I have grown a very fine belly shelf to set things down on, so weight (of the device, not me) isn't as much of a problem.