Which print did you get? I've tried the Blue Ganeshas (100ug) and the Mayan Calendars (200ug) and neither had any bitter taste. Taking three hits of AFMB's stuff will definitely produce a rapid onset. It's pretty strong stuff. You must keep in mind drugs always effect everyone differently, especially psychedelics. This LSD is mass produced all over Europe and has been GC/MS'd many times. A few years ago, he was selling the Hoffman print which turned out to be LSM (LSD analog). The LSM was very interesting though because LSD analogs are so rare that it actually turned out to be quite a treat. I can't speak to the Alex Greys or the Dalai Llamas because I have not tried them but I assume they are produced by the same Swiss chemists as the others. The lingering effects you speak of are called flashbacks and are very common. No one knows the exact neurological reason these flashbacks occur but I have a theory that LSD produced in a certain way may leave your receptors open per say... Maybe AFMB's stuff repaired it by closing them. This probably sounds retarded and it probably is but just my little speculation but honestly I have no idea what I am talking about here. LOL. I am about 99% certain that this is LSD though.