I loved my first set of Kanger coils, no problems with them. After that I got a similar taste that would show up after maybe 20 drags. I didn't realize I had only 2.2 resistance instead of 2.5 like I normally do, and I was burning my wick. I started rebuilding my coils with a cotton wick and 3 ohm resistance and it is better in every way. No longer needing to replace my coil all the time, better flavor output, no burnt taste unless you burn the cotton (which is hard unless you dry burn), and it's much cheaper. Kanger does a great job with coils, but the silica can suck a lot. Just my 2 cents.