There is the classic Blue Omega (2001/2002ish I cant remember..)
also the Yellow Yin Yang that came out about a year later, wich I felt was a clone pill. It was the same size with the blue, yellow, green, red specs in it.
They were both MDA for sure.
Best MDMA pill would have to be either the Green Camels with the word CAMEL on the back and a camel on the front. Or the Green Lacoste's, many batches that came in waves, odd thing is they just kept getting better, 2002-2003. But damn that first batch of those Blue 'J's were damn good too. argh I wish I still had enough magic left for one more rolll.....
The first time I rolled we took white Rolex with the raised crown, pressed so perfect I wish I had one today. Oh my, you dont see stuff like that any more.
They were good but it was my first time so I went nuts on them.
...please excuse the rambling, I could talk E pills for weeks on end.