I'll tell you...I recently acquired some REALLY pure LSD that mic's out at 150ug per dose (it was sent in for testing by a group that does so). It came from one of the DNM most trusted vendors, who sells LSD that is so good I cannot even put it into words. I've done a lot of it in my life, and have had some super HQ LSD, but I have to say...the three different samples I've gotten recently are, to say the least, about as fine a quality LSD as you can get. After having toyed around with AL-LAD, ETH-LAD, LSZ, 4-ACO-DMT for quite some time, doing 300ug of LSD last week made me realize that, for me, the others are just lesser substitutes for LSD. No bodyload from this LSD, smooth come up, ridiculously euphoric, as clean as a whistle, and again...it made me realize what I had been missing out on for so long. Yeah, it lasts longer, but shit...the quality and intensity even at 300ug was incredible. And what I've determined, for me, is that the other compounds don't seem to scale up well, in other words, you seem to hit a wall with them as you climb the ug ladder, often adding nasty body load, or just not having as clean of an experience. LSD, on the other hand, you can go as high as you can handle and you just amp up the experience. Yeah bodyload increases a bit with increasing dose, but with some of the ultra-clean LSD around these days, I can't help but think that I'd simply much rather do IT as opposed to the others, though I do like the brevity of the AL-LAD trip, that you can sneak in on an evening because of its duration. But yeah...there is some SICK LSD to be gotten in you look in the right places, and I am super glad I did. Based on the 3 different samples I've gotten recently, they were all among the best, cleanest acid I've ever had. Literally. I have a whole bunch of ETH-LAD that I'll likely trade for something, and keep a little for analysis later on down the line. But if I am going to devote 8, 10 or 12 hours to a psychedelic, it's going to be LSD from here on out.