@Helios I've been extract exclusive for a long while now.
Went from hemp to cotton to the coil and now on to rayon.
For me it's a lot less faffing around using a fibre over a metal.
No heat soaking, less mess in the tip and easy/no clean.
Convenience as well, took my canoe down the river yesterday with 6 preloaded rayon balls.
It's easy to overload a metal concentrate pad, mesh or the coil. Yes I've had a gummed up cap with a coil of SS mesh using an IH.
The little balls trap the hot, runny extract in the fibres so it's got nowhere to go.
The other thing I've noticed is less reclaim which I love.
Only downside is a 'taste'. Hemp being the strongest, then cotton and then rayon.
They all taste vile if you push it heat wise but the rayon seems to be pretty neutral the rest of the time.