yeah, i had a tiny little bong, then i bought a 2 chamber bong and added my tiny one to make a third, its great, though sometimes a third is a bit unnesesary, but still fun....

also, i find it fun to make my own multi chamber bongs, if ure interested in that lemme know and i can send you a diagram,

as for buying bongs, cant really help ya there, all i can say is walk into alot of smoke shops and look around, see what you like, when you find your bong youll know its the right one.....