I've smoked Datura before, but it didn't do anything. Apparently in the Middle East it is sometimes mixed with opium and hash in smoking mixes.
When I tried Brugmansia, I made a tea, using a single flower I think, was quite a few years ago now though. It was only steeped for 10 mins or so, then all leaf parts removed. It is very important, with large doses, not to ingest any solid plant matter that can continue releasing alkoids, making dosing much more risky.
This tea was split between 3. I had tried to err on the side of caution, and wasn't expecting much. About 20 mins/half an hour later, I started to feel drunk, and dizzy, my centre of balance was definitely messed up. I remember going to the toilet, and seeing the floor of the toilet swirl around, which I thought was interesting as I was fully aware this was due to ingesting the Brugmansia...I had thought the hallucinations were entirely deliriant in anture. It was time to lie down.
Felt kind of sleepy, so we all went to bed. It was a weird feeling. Felt like dirty electricty was running up and down my dody. Wasn't pleasant per say, but can't say it was particularly unpleasant either. Raging drymouth though. In this weird trance state, the boundary between dreaming and waking reality had been destroyed, so I had crystal clear visions, which I engaged with fully, such as talking to my friends, and other things, that at the time, seemed completely real. I think at this point, I was no longer aware I had ingested the Brugmansia, definitely a more deliriant vibe. Not sure how long this went on for. Hard to remember all of what featured that night.
No hangover the next day. Felt quite good actually...this energy in my body, subtle but there. I couldn't read small print for another day though.
I wouldn't do it again. Despite all the horror stories on Erowid, never felt any fear or anxiety, at all. But personally, I didn't find it particularly interesting, fun or useful.