Personally I think that alot what is said hear isn't completely true. For me, MDxx will get me dancing more than speed will. It gives me a great high, that really does make you want to dance most of the time, although I must admit when you are getting hit hard then you do feel like sitting down for alittle while. but bieng smacked out won't last for more than half an hour, then the abilty to dance will come when desired.
Some of you may be thinking that if I'm able to dance then I mightn't be getting strong bickies. But I was able to dance quite comfortably and readily on the pink rolexs, red russians and even on the beige As (although I admit I definately had a bit of difficulty standing for a while there!).
If strong pills knock you around too much and you want to dance, then maybe take them in halves - and the other suggestions here in regards to using speed are good ones too.
I think if you are in the mindset of dancing then you will be able to dance your arse of on a good dose of MDMA but if you want to chat then you'll probably spend your whole night doing that.