I like mostly all of them heres my reasons why;
Pipes: you just pop the bowl in and its ready, probably my favorite out of all
Joints: Great when on the go and in public, cuz you can just say its a cigg
Bongs: Time to get riiiiiippped! Lil bong hits before going places is fun too.
Blunts: Lots of weed for blunts, so your gonna get fucked up (least perferably)
Steamrollers: Same as bongs, TIME TO GET FUCKED UP!
Chillums: never smoked one
Hooka: Hell yeah, time for a party. Too bad i only got a one hose, but its still great to bring out once everyone is drunk, all the non-stoners watching, haha HILAROUS fun!
Bubbler: Nice for you or you and another. I dont like them with lots of ppl, bowls dont go long in em.
Knife Hits: If i could just get a pair of knives that were specifically for it, that would be great. Had to throw out the last ones.