Hmm I've gone with just mdma but its a tough one because I like both in different ways..depending on my mood and where I am/what Im doing. If im just chilling out with mates definatly prefer just mdma but if im in a club/rave/festival setting something a little speedy is nice as with pure mdma I dont really want to move that much..and I find it quite hard to function let alone dance etc lol. I remember the last fest i went to the first night I'd had a load of mdma crystal and I got pissed off coz the people I was with were all off their faces on speed and kept wanting to constantly go from tent to tent on the night..and all i wanted to do was find somewhere to sit/lay/stand and stare at things/talk to someone for a long time

On the other hand speedy pills are nice though...but if I could only do one of them ever again it would have to be pure mdma. Speedy pills tend to have a god-awful nasty come down lasting well into the next week (mental effects anyway) even when your on the drug it tends to make you over confident, full of yourself, arrogant, dominate the conversation etc and I dont really like the person it makes me..then the next day you spend it being paranoid as hell and feeling like your dying. And i cant stand the not being able to sleep part it drives me crazy
Whereas an mdma comedown is almost like a high in itself

a nice mellow comedown that leaves you feeling almost lightly stoned all day, comtemplative, refreshed, happy with life etc...and most importantly you can SLEEP. I actually found I could sleep on this when i was still very much up. I had redosed shortly before being told we had to leave as my boyfriend was having a bad time with it. So we went back to his..went to bed..he eventually felt ok and well asleep...i layed back and went into that half dreaming/wakeful state with closed eye visuals and nice trippyness

and my heart suddenly started racing and i felt myself coming up on the stuff id redosed. After about 10mins when it had calmed down though i went back into the trippy state/sleep state till morning lol.
I think the reason why some people dont like pure mdma is because if you do it too much, as people have said, you wont get any positive effects from it..you wont be 'loved up' and euphoric..you'll just be fucked up. Also I find that once you've peaked you cant really go much/any higher. Whereas with speedy pills you can keep going and going until someone stops you in some cases :/