I may have to try the Mini. I have a Silo (Nautilus coils) and have been using the Ni coils from VS in the rDNA40. It's slightly better than kanthal, but not mind blowing. I still plan to make my own nickel coils, but the prebuilt coils can be convenient at times.I bought a Subtank Mini and at first I really didn't like it with the kanthal stock coils. It was sub par to say the least. When I took it up to 21 watts it couldn't keep up and was tasting burnt on a .5. I ordered some OCC nickel coils from Vaporshark to stick on my rDna 40 and WOW! The subtank mini with the nickel coils is amazing.
If I may ask -- what wattage do you have it at, and what temperature with the Mini and the TSC coils?
That was the only second chance Vaporshark gets. Looks like Yihi may get my money or perhaps a Vaporflask 2.1