I was prescribed cylert at 37.5mg 2x daily. It was my prefered ADHD medication, but my doctor discontinued it due to possible liver complications. It was more gentle than dexedrine, it helped my ADHD to a degree, and had far less side-effects. Unfortunately, I never really got high off it, and only rarely would exceed my dosage. But as a medication, I really found it very tolerable.
I am aware of the similarities between cylert and methylaminorex, and though I have tried 4-mta, its hard for me to make a good connection. I did notice that both had very little physical stimulation, in comparison to amphetamine.