me and my friends use 2L bottles, just coz they're easily available and a good size for us

I find lung bongs are not harsh AT ALL since you don't even notice the smoke going down, its what got a non smoking friend into pot, he hated smoking but enjoyed pot when he had done it in the past and when i passed him my lung bong and he tried it - he fell in love, hehe.

Nah they're fairly cool but i prefer the high/feeling i get from joints and i just love everything about joints, bongs come second for me, usually when I wish to conserve my stuff a bit.

Jonny