Ive recently had the opportunity to try this chem again. After a relatively long period of cleanness, you could say my tolerances were back to zero.
The dose was ~40mg... compared to my previous trip at 30mg this was a different, more powerful trip, but again, not overpowering in any way.
I found it to be pleasant, long lasting (around 8h easy), quite clearheaded, and even a bit visual (certainly more visual than 30mg), with senses again enhanced (careful with loud music, as the senses seem to come into focus in turns). On the downside, it was accompanied by some body load (some "waves" of nausea every hour or so) along with muscle tension (especially in the back), and not that much increased music appreciation (which was a bit dissappointing).
The CEVs from this were on the other hand quite interesting to say the least. Might have been the brightest ive seen, with the closed eye darkness seeeming open space, with flashing lights that were indeed beautiful to look at. later on, some landscapes developed, but alas, they were hard to focus.
and this is also the first substance ive actually heard/ composed music in my head... and im not a musical person at all, but it did sound beautiful. It was like tunning in to some radio while driving slowly down a summer road, you hear some familiar music, and you enjoy the mix the dj plays.
also, this time, the "erotic" was also explored, and it was quite delicious, not impairing at all, and getting a backrub felt amazing.
next day, no hangover, just tiredness from not sleeping, and a difficult time sleeping even 20h after it. some muscle pain due to excessive dancing and prolongued sex, but really cant complain about that

.... might write a TR later on if i get the time
overall, a very nice experience, and while i continue to think there are more worthwhile substances out there, i continue to believe this has a place (theres a lot worse substance out there). i will be revisiting, but the long duration will keep this reserved for just very occasional use.