I don't get a taste per say, I can tell it is metal.
The N-Haler tips are of a hard plastic type substance. He speaks of an organic nature and a more dense material that when they cure no two are exactly the same. They fit my Ego perfectly. I can remove the cone first, with the drip tip in place.
Supet T has gotten in some delrin that I think may fit the ego-Give David a shout and ask first-his shipping is better.
I have a delrin that came with mine from puresmoker that fits great.
Hope this helps you.