having used them both before I have to be honest L.S.D was much better it provided a longer lasting trip and much more intense but Mushrooms do not leave you feeling dirty or unclean like L.S.D does when you come down.. L.S.D is better for the intensity the longer peak times and duration of the high. 1 to 3 days.. Mushrooms for the cleanliness... L.S.D is a dirty drug the rat poison and other chemicals cut in to it... The strychnine in it plays havoc on the human body.. mushrooms are slightly safer for the human body... but they can be deadly if using the wrong ones.. hell all drugs are deadly...
Better to use none of the above..
And to be honest Peyote was much better.. though there was much to be said for MDMA aka Exstacy...
Knowing what I do now I have to say none of the above, being a drug free individual and none supportive of any hard core drugs.. man made.... natural.. is the better alternative, if you need to use... Find something else to entertain yourself If you have to use drugs to have fun you are doing something wrong...
Beach Bunnies or Disco Dolls...