I ordered a Dugain Aventurine pick and It's amazing.
Holy Harmonics Batman! It's extremely smooth, the finger carving on the back and front are awesome. It definitely takes time to get a control, since it's thick and heavy. But the sound is soo different, even the attack. You have to dig less for speed picking. That makes it harder to speed pick. But perfect for Powerchord/Chord galloping.
I definetly wll try different materials too. The tonal difference is so big, that many tonal possibilities come to mind after playing it for an hour. My RG sounds almost like an acoustic now (unplugged)