glass ...glass and more glass.. my spoons are glass.. my hitters are glass...and my bongs are glass...i will never go back to using metal again. Personally i think it leaves a wizard of oz taste in my mouth(like im the tinman).
Only downside to glass, i found is when you go fo a roady with your friends: everyone gets high as fuck and you stop for munchies and your friend forgets to put your pipe into your cozy(aka pipe pillow) and it smashes on the cement and your out 50 60 bucks ...but anyway ...glass is smoking choice!