If you have to compare it to MDXX. Then I would say it is like the up part of the roll. Everything seems bright and colorful and music sounds great. I don't always feel like dancing but most of the time I do. It doesn't seem to matter what I am doing, it is fun. It also depends on what you are going for, how much you do and the quality of your Meth. Some people do it often, to study, stay up, drive etc... I only do it to party (well except for once when I was up for three days).
IMO it isn't really much like MDXX except that it increases your heart rate and b.p. and enhances your mood.