best high to me would be to hard to choose.
off top of my head my top high's, alll of which were likely accompanied by maryjane
best body feeling high i ever experinced - oxycotten and mdma combo + sexy lady friends company
best mind set after - 8 grams of mushrooms, outer/inner body experince
most intense high is split between - meth and mushrooms combo, alternate view of reality leading up to rebirth and another time with dxm, vicodin, soma's xanex, and alcohol, another alternate reality, void of anything reconizable, again experinced rebirth.
best short duration high - cocaine at a slayer concert. just plain adrenaline/cocaine driven madness
all time favorite drug lsd. every time is great.
same with good weed, it rules every time