What is it? I don't think I want to try rebuilding right now. But I'm looking for the highest quality tank out there. One with replaceable atomizers. I want quality!! No burnt hits atleast not for a long time and limited gurgling and of course after taking all the obvious precautions to prevent burnt hits and gurgling in the first place. Right now I have an aerotank v2 with their new version replacement atomizers. I had the nautilus I really liked it but I think it was defective after trying several replacement attys in it and making sure everything was nice and tight it still leaked like crazy.
You really aren't going to find a clearo that doesn't have issues. Vaping has come VERY far since 2008, but it still has a long way to go....right now, RDAs and RBAs are the way to go.
If you MUST settle for a clearo, you are going to have to accept that you WILL occasionally have issues with gurgling, dry hits, having to fiddle with it, leaking, etc. With that said, I think the original kanger pro tank is time tested, and a great device. I prefer it over the pro tank 2 actually.
Either something from the Kanger Pro Tank series,
or a Nautilus
You can also carto tanks. Notably more consistent, takes a little more time/detail to set up then a clearo, but once you put in a carto and prime it properly, it has FAR less issues than clearos have. No leaking, no gurgling, better flavor, better consistency. I recommend an IBTanked Carto tank that.