Damn, that sucks dude. At least they let you go. Fucking assholes, they aren't meant to help us and protect us, instead we are forced to be afraid of them.
The first time I came up on E was at an infected mushroom concert. It was insane, at one point we were stopped by cops (for toking in the bathroom), but I was so happy I didn't give a fuck. I even wanted to be friendly to the cops and I was asking them what their name was and stuff...
After abstaining from MDMA for 4 years, I tryed MDMA crystal at a rave called gatecrasher in the UK. This was one of the most intense experiences of my life. I couldn't believe that you could feel this way (I had completely forgotten my first experience and to tell you the truth I didn't really 'understand' what happened to me the first time I did E). The come up was awesome, I was chilling on the grass enjoying the unbelievable beauty of everything and everyone around me. I didn't care abut anything, I was happy about myself, my past, my future.
It's too bad, I can't seem to replicate that feeling, maybe if abstain for another 5 years...