To my mind MPH shits all over EPH. I used to abuse the shit out of MPH in High School, used to hook a couple kids who were prescribed loads of the shit up with cigs and weed on the regular, as a result could sniff pretty much as much as I wanted of this shit every day. I used to get 10mg tablets and 40mg capsules as well as I believe 36mg controlled release tabs/Concerta. I always found snorting it was the best ROA, but it helped to take a moderate dose orally before sniffing lines to give it better legs and a little more euphoria. To me MPH is probably the most similar drug to cocaine that I ever tried, but I have only really used it a few times since High School and they were all shortly afterward. Perhaps with the amount of ice I have smoked it would be less enjoyable now, that said, I used a fair bit of speed and dexamphetamine before I ever tried ritalin and it did a lot for me then.
I got some EPH last year or the year before, maybe it was a shit batch, I don't know. It came as clear crystals and I had to crush them to make it a suitable consistency to snort, the substance had a pretty significant burn when snorted, not the worst I have encountered but definitely not pleasant or mild. I found it to be less than impressive, the stimulation it gave me was relatively short lived, but I felt like some of the mental stimulation would outlast the physical side of things and I would be feeling lethargic but my mind still racing a little, it made me want to redose before the last dose wore off and it seemed to result in a pretty sketched out feeling as the last few doses were wearing off. It wasn't a terrible chemical, I mean I did finish the bag, but I got it incredibly cheaply (for drugs in this country any way) and was not in any way tempted to purchase more. It has some use, but I suspect it would probably be best dosed orally and as a stimulant for functioning as opposed to using recreationally, where I actually found methylphenidate to be really good socially and recreationally as well as for functioning.