On my 2-3 pill + 8g of musrhoom trip, they were probably the most crazy, intense,, out of this world visuals I had on Mushrooms before. I was sitting in the dark, and every surface around me was a portal into another dimenion.
I had been at a NYE party, and had done I think, 2 pills at the party. One speedy pill, and one pure MDMA cap. Got mashed out and bored at the party and headed home, it was probably about 2 hours after my last pill and I started munch on mushrooms, started with 2g, but then kept going back to the bag for more grabbing random ammounts at a time.
Went from sitting in my living room, to locking myself in the bedroom with the lights off because it was getting so intense - but just ended up being a stunning trip all around.
I'm personnaly a big fan of the "do the E first, wait a bit, then do the shrooms after", if the E has peaked, and near the end of the peak and you do the shrooms, by time the shrooms kick in - they up the E again, but the trip seems to be more dominated by the mushrooms than the E.
Where, doing the shrooms before the E, the E seems to take over and dominates the trip more.
So maybe, if you want a more MDMA-heavy trip, do shrooms first, if you want a more shroom-trip, do the E first and do the shrooms as the E is comming close to the end of its peak.
this is just my personal preference, other people may like other things - i wouldnt really say any one way is right or wrong.