I like candyflipping all around better than any other drug (or drug combination) because in many ways it is very close to being sober as far as your mental state, but it allows you to access all the really excellent effects of acid (music sounds great, sense of profoundness, insightfulness) and E (poise, confidence, self-love and love for others) without the downsides (the "confusion" and scariness of acid, the running-around-hugging-everyone effect of E).
The candyflip moment, as I think of it, is about half an hour after you take your E. The acid confusion seems to lift off of you like a heavy fog suddenly dissipating. The room suddenly seems more open (this is very dramatic if you're someplace with a high ceiling). You are suddenly instilled with a sense wonder and awe at the amazing things our world has to offer, a feeling that you have power over your own destiny, and a sense of purpose to do the things that are important to you. And there is an incredible feeling that something profound and important is about to happen.
Watching someone who is in the midst of a successful candyflip is pretty cool, too. Their entire demeanor gains a perfect confidence, without the slightest hint of arrogance. Their skin seems to glow. The eyes are probably the most dramatic: they grow wide and bright, like those of a child, but wiser.