This might help explain things.... The 1st post describes the differences and other relative info.
http://www.bluelight.ru/vb/showthread.php?t=396038
Sir Thizzalot, I really don't think that you should do heroin. Just the way that you are writing about it in this thread seems to me like you are doing it for the wrong reasons... not that any reason is really right. But most people do heroin when they work their way up the pharmaceutical opiate ladder, and can no longer afford OC for example, and are so sick from withdrawals that they choose the cheaper alternative being heroin.
Your writing like your doing it socially with people. If thats the case, these are most likely people that you do not want to be around. I have done heroin and can tell you that all of the nice people that I did it with ended up in debt to dealers, ripping off anybody to get money for a fix, and eventually ended up in rehab, jail, or left the state.
You said you think plugging is the safest (and I may agree when it comes to tar), but you will probably smoke it because that's what the people around you do.... C'mon, heroin isn't weed. It's not like "hey, lets meet up at Johns, get in a circle and pass around a foil with tar on it and chase the dragon together, then goto Sallys house to watch a movie". You really shouldn't downplay this just because you may smoke it or plug it, but not IV it.
Sorry for the rant/lecture, but you just seem like you have no clue what you may be getting yourself into... And if you do, then you wouldn't go through with trying it.