I haven't had a metalic taste from perique but yesterday I got a different taste I don't remember ever getting with it. Yesterday I had a bowl of dunhill elizabethan in my new 321. I used the balsa filter that was already in it when purchased. I got tons of different flavors with the balsa filter in. Alot more of that virginia taste. Also got alot of the spicy almost tongue throbbing spicy from the perique. Anytime I smoke a perique blend I can't retrohale without getting some burning in my sinuses. This bowl I didn't. Retrohaled quite a bit to confirm but no sinus burn. The tongue feel was the weirdest thing I've had yet with perique. Maybe I should try these balsa filters a little more often with different blends.