Acid by far. The only thing I didn't like is it lasted so long I was still twisted 12 hours after taking it and it was day time, I hate being high during the day, I prefer it to be dark so you hallucinate better.
I love the feeling coke gives you but this drug has too many negative effects- racing heart, paranoia, loss of appetite, depression, only lasts for about 1/2 hour, bad come-down, lack of money, weight loss, selfishness, rots your nose, controls your life.
XTC is pretty good but I find it unpredictable in how it will make you feel. I hate it when you feel really worried and vunerable when on X.