I had a 150ug experience the other day for the first time with LSZ, or any lsergamide (sp?). It took about an hour to notice any changes and slowly rose to a peak at 2.5-3 hours from ingestion. I found the feeling very spiritual or personally meaningful, however you define it. I had made a list of things for myself to ponder under the influence and upon reading them I was very strongly emotionally inspired to overcome personal problems and to better myself. I felt like 'myself' in a way I hadn't for quite some time and it was very refreshing. The next morning I went through with what i had promised myself and disposed of a sizable stash of drugs that were causing harm in my life and relationships.
I was having anxiety prior to the trip and once it kicked in, it continued for a while with a fast heart beat (it was fast before ingestion too). After I had reached an agreement with myself on my personal issues, I felt much more calm and relaxed more, about 3-4 hours into the trip. Around the point I put on some music (The Beatles - White album) and the listening experience was orgasmic and amazing, indescribable even. The trip tapered off, coming down around 6-7 hours after ingestion, but after effects lingered several more hours and I had trouble sleeping. The next day I was very tired, but in a fantastic mood, which still persists until today, 4 days later.
Visuals were relatively subtle; brightened and saturated colours, a mild 'fish eye' type distortion, some movement in my peripheral vision. The closed eye visuals I think were more impressive, but I have a hard time remembering. I also had some muscle tension, mostly pronounced in the first 4 hours, though it was not uncomfortable. Compared to 2c-e, maybe 1/3rd as much tension.
All in all an absolutely fantastic psychedelic. It felt a lot more powerful than I was expecting from one hit!