I feel like meph actually gives a smoother float back to earth than MDMA. The high doesn't last quite as long and the intensity doesn't last as long either. Unless you're bombing/railing all night long, it doesn't really stick around long enough for your to get really used to the feeling, so when you sober up, it's not quite as much of a "Awww it's gone" feeling and more of a "Well that was fun" feeling. I find a nice 250mg bomb of meph has a come up almost just like MDMA, you feel like God for about 20-30 minutes, and then it mellows out to a nice coke-like buzz, and then back to earth. I feel like MDMA makes you feel like God for 4-5 hours, and then just plain drops your ass straight from heaven back to the concrete.
Granted, I have not used large amounts nor have I binged on either one.
And this should be in ED, not PD.