Your Choices suck. Out of that, I would have to choose pot. But besides Pot, MDMA is up therre, but thats something reserved for special occasions. Beer is great too.
Herb and Opiates (of any kind) = my favorite drugs both individually and in combination. The occasional benzo or bit of methaqualone is always nice too. But u can only find ludes in Mexico damnit.
You should put some better poll options... I've only dabbled with a hallucinogens but what I've done so far I've like a lot. But for every day use, pot.