I had 2 sunflowers about a week ago and it turned out to be a really intense trip. I was also smoking my mates grass which probably intensified it a lot. I dont do grass all the time so i never really build up a tolerance...anyway the combination, plus the fact that i wanted to act more in control as i was introducing my mate to acid, knocked me on my ass and i experienced some powerful ego loss. The effects were full on, the only difference between having 2 of them and 4 getafix was that the trip was decidedly shorter, 8 hours or so as opposed to 12. The actual visuals were mind blowing. This has lead me to estimate that the sunflowers must be around the 100mic range as having 2 caused such powerful effects. Be careful when smoking grass on acid... its not too bad when the drugs wearing off but on the peak it certainly makes it crazier (for me). Once you reach a decent dose the strength of effects seem to become more transient, and the main difference, i'm discovering, is how long it lasts.