As stated before, I'm using the 510-threaded Ikenvape Platinums. I've also used the smoktek single coil cartos.
I recently bought a batch of 801-threaded Fusions and a 510-to-801 adaptor. The only one that I have tried was an extreme disappointment - very harsh vape (the resistance checked out normal on the Provari). I can only guess this was a bum carto, as I have not gotten around to trying any of the others.
Ikenvape just began offering a 510-threaded Fusion, so that might be a great place to start for you. Next time I order I will likely give those a try. https://www.ikenvape.com/ProductDetails.asp?ProductCode=510FUZESTD
I recently bought a batch of 801-threaded Fusions and a 510-to-801 adaptor. The only one that I have tried was an extreme disappointment - very harsh vape (the resistance checked out normal on the Provari). I can only guess this was a bum carto, as I have not gotten around to trying any of the others.
Ikenvape just began offering a 510-threaded Fusion, so that might be a great place to start for you. Next time I order I will likely give those a try. https://www.ikenvape.com/ProductDetails.asp?ProductCode=510FUZESTD