taste is as pure as it can get when using a pipe and a lighter, no off, odd, metal tasting.
glass dosnt degrade and is a pure material, even with metals, you can have toxins in them that are released when heated causing certain types of illnesses/diseases. not all metal pipes are made from the correct material, with the correct amount of alloys percentages making them non toxic or even aiding in bad taste.
i havnt smoked out of a metal peice in close to 10 years, with the only exception being a ti nail.
glass is a hand created peice by an artist. metal pipes are spun by the thousands on cnc machines all day in factorys in china, mexico, ect.
support a local artist or an online community artist. each peice is hand crafted and created with love and a passion for the art.