I've been running a single coil IGO-L since about 2012. I love everything about it except the size. With 22mm basically the standard now for mechanical 18650 devices the igo-l just looks wonky on them (cone shape and only about 21mm). I have tried dual coils and have been less than impressed. I'm simply looking for good/great single coil rda's. I don't want something that runs "single or dual" I only want a single coil atomizer. Everything I can find online seems to be "single or dual" or whatever. I don't want 2 or 4 holes in the top cap, even if I block them off they still leak. I want a single hole top cap. Is there anything out there for something simple that still looks uniform on a 22mm mod?