Well, surprisingly enough there wasn't any mega thread on this earlier, so I decided to make one so we can keep all the discussion on the topic in one place to make things easier to read. The MDMA + MDA combo seems to be growing in popularity, so it's about time we have a thread for it! MDE will have an honorable mention as well, but I doubt we'll see anyone with questions about that one
I guess I'll start off with some tips for anyone who is going to try the combo:
Dose a bit lower than you normally would. If you normally take 150mg, take about 130 or so of the two doses combined.
Get ready for a bit more of an "E Tarded" roll than normal.. it's really not too bad, but I find myself getting the 5 second memory and running around opening up about things I shouldn't a lot more than I would on either drug alone
If you've never tried MDA, just play it cool if shit starts to get weird. If it looks like everyone is wearing sunglasses at 2 in the morning or you see a pirate ship in the sky... you're doing it right.
There are also several ways you can do this combo, every one a bit unique from the last.
You can take a mostly MDMA dose, with small 25-30mg booster of MDA to add on some psychedelia..
or you can take mostly MDA to get the full psychedelic effects, and take a moderate dose of MDMA (30-50mg) to add some empathy. That would be my personal favorite

Or, you can take a 50/50 dose of each... I find that's when you get the most "E Tarded", but that's not always so bad
Experiment around with the combo, find out what YOU like. I know I much prefer MDA to MDMA, so I usually lean towards heavy MDA with some MDMA thrown in to spice things up.
Some notable pills:
http://www.ecstasydata.org/view.php?id=1345
http://www.ecstasydata.org/view.php?id=330
http://www.ecstasydata.org/view.php?id=1387
http://www.ecstasydata.org/view.php?id=731
So, what amazing times have you guys had with this combo?