I combined MXE with a few things during the festival I went to... the first night was the best, I had taken methylone and then some MDMA, and had a great roll. A few hours into that (maybe just an hour after the MDMA) I added 25mg of MXE, then 25mg more an hour later. I went into a beautiful MXE state that included greatly enhanced tracers and colors (courtesy of the empathogens). As the music ended and the horde of people began streaming out of the stage area back to our campsites, my friend and I (both on MXE) both simultaneously felt like we were all molecules of water flowing together, locked into an inexorable path towards the exit gate. When we reached the gate we literally felt the *drip* out of it as if dripping out of a faucet and we began flowing freely again. I spent the rest of the night hanging out, mind-melded with my friends, and then we went to some late-night music (a great funk band) and I danced and drank a couple of beers, smoked weed, and generally had an amazing time playing with the lights in my vision. Afterwards (many hours later but still decidedly MXE'd), I did nitrous for the first time which was nice.
The next night, I candyflipped for the first time and added 50mg of MXE (in 25mg increments). Things got a bit wonky and sloppy especially because I had 1.5mg of etizolam, and then forgot I had it and had 2mg later and had a partial blackout where I also tripped and fell face-first into a metal grill, somehow not hurting myself at all but hurting the grill and my scale (though it still works).
The third day I took DOC and had a great day trip, and then took MXE again that night, 75mg total. As is typical when combining with DOC, the physical effects of MXE were much weaker but the mental effects were intact. The trip actually got a little difficult at times for all of us (we all took MXE that night, 7 people). The headliner was Tom Petty, who really didn't fit in with a festival where everyone was tripping and the bands were Grateful Dead-based and things like String Cheese and Widespread Panic. The vibe got a little weird and low-energy and we all felt the need to leave. There had been a brief evacuation due to a potential storm (that never materialized) so we waited for about an hour with no music at the next location (it was going to be Hot Tuna), though the laser show at this stage (in a beautiful forest setting where we spent the day relaxing out of the intense heat) was awesome. We started getting restless again and finally the music started, but we left partway through to head back to camp and hit some nitrous and prepare for the final music, Bustle in Your Hedgerow (a really super badass Zeppelin cover band, all instrumental only). Hitting nitrous, I had a really amazing experience, I don't remember most of it except that it was some sort of extra-dimensional voyage that reminds me of salvia without fear. The part I remember clearly is coming back, I was an infinite, scrolling tape of human figures, the same figure in every spot, and suddenly I was sucked down out of all infinite copies simultaneously and was back in the real world, glowing and wide-eyed. Then we went to the last music and had a great adventure getting there, and I jammed so hard, the dissociative/psychedelic combination (which was weaker by now) increased music appreciation so intensely.