You're just like me. I hear you LOUD AND CLEAR. Sorry for the long-azz post but I think it should be helpful as I am just like you in many ways and I have been down that road.
The problem that you're having is the exact reason why I like and have many of the Kangertech Subtank/Toptank Mini and the Protank 4, which are both discontinued and it looks like the coils are discontinued, too (but not sure on that).
But the reason I like them is they are basically clearomizers that come with an RBA head that turn your tank into an RTA. I have 20 or so of these RBA heads and maybe as much as 8-10 of the aforementioned tanks. I can coil & wick the RBAS up and carry some with me wherever I go, just like I would with factory coil heads. So if I'm out n about and my current coil/wick need changed, I can switch out the current RBA with another that I coiled and wicked ahead of time.
The Subtank Mini RBA V2 is also very easy to coil and wick, which is a big plus for me.
Now that's not a solution because eventually you will never find the Kanger Subtank/Toptank Minis and Protank 4s or the RBA that fits them. Unless of course you buy a couple hundred dollars worth now before they are all gone. lol
I know there are other tanks out there like the Subtanks, where you can use a factory coil or an RBA, but I can't suggest any because I have so many Subtanks/Toptanks/Protank 4s and RBAs that I have never had to buy new tanks for quite a few years and will not for many more years to come.
So you have to ask and look around for a clearomizer tank that has the following features...
1. Can use factory coils...but...
2. Comes with an RBA section to turn the tank into an RTA.
3. Can buy those RBA sections separately so that you can have multiple, coil/wick them ahead of time and carry a few around with you just as you would a factory coil heads.
4. Is a 22mm tank (otherwise you may have to buy al new mods).
I suggest you make a new thread asking for suggestions for newer tanks (released in the last 1-2 years) that fit the above criteria. I'm sure there are plenty of people here that probably know every single tank out there that exists with the above criteria. Your best bet is to buy one that is not too old so you have a better chance of getting parts for the next few years. But ultimately you'll want to buy more than one tank and many RBA sections (and other parts like glass) so you eventually never have to worry about playing this awful game china plays with us smokers, er um, vapers.
Your only other solution is that you'll have to start buying/using tanks that are strictly RTAs that are suitable for you. Yes, they are inconvenient than the types described above in that if you are out and about and your RTA needs recoiled and wicked,then you are kinda screwed. But that's why you have to hedge that by carrying more than one RTA and/or coil/wire/tools with you. Once you find the RTA that you love, then you will have to buy more than one BUT you will also have to buy spare parts like screws, o-rings, glass, base sections/decks etc. so that you can vape that for a few years into the future before you have to worry about finding new tanks.
It's going to be a little work before you find a good fit for you, But if you play your cards right, you'll get to that happy place soon enough.
Thanks! I loved my two Aspire Nautilus 2 tanks on my Eleaf picos! Then I found myself on a trip with my last coil, and it was a dud. The local vape shop didn't have coils for it, so I had to get a new tank. All their tanks were 22 mm, and my Pico only took 18 mm, so got a new battery. That experience opened up a whole new world.
You must be confused or I am not understanding you correctly. The Nautilus 2 is a 22mm tank. And all the picos that I know of all accommodate 22mm tanks or larger, depending on which model.