With 6-APDB I started at like 127mgs or something, then redosed another 60mgs a couple of hours later, my mates both did 110 and 120, both were fucked, but not too much, had to say though that we started the sesh saturday afternoon and by sunday afternoon the whole gram was gone, mostly boshed my me.
It seems it affects people in a different manner, however if I were to repeat the experience I'd do a 150mg initial dose, followed by another 60/70 a couple of hours later, it's not too strong by weight.
Last time I did MDMA I did a single 300mgs bomb, all in one go and had the best MD experience I've had in years so I guess those serotonin receptors had been taking a proper bashing the past few years.
But even my most naive friends still weren't that fucked up after 120mgs, so I guess 100mgs might be an underdose
True about the increased psychedelia, at some point I was wearing one of those airplane masks and had the coolest most intense visuals I've had in a while, also I mentioned in another thread, we were sitting on my friend's balcony and his cat was cuddling on me and it looked like he had sparkles on his fur. Amazing