I am also a frequent, regular weed smoker. I have done mushrooms twice in my life, and LSD once.
Tge LSD was slipped to me unknowingly and kinda freaked me out when my vision started doubling and everything seemed like it was shifting around like sand dunes or water reflections. I would be willing to try it again knowing what I am taking, if I had the chance as frame of mind really played a role in how the whole experience felt.
The shrooms, both times, just made me feel exactly like being drunk, complete with the queasy sickness and "spins" as it peaked. I don't have any desire to try them again, as I don't even drink alcohol because I don't like that feeling.