Hi regarding the doses, for me it goes like this
75ug - mostly worthless, there's a vague feel of something being present, but it never develops into anything worthwhile, imo, better to take the whole blotter or combine with something ells
150ug - great dose for a light trip, noticeable effects, light mood lift, light visuals, slightly altered thought patterns.. none of the effects are too strong to appear noticeably high to others (the pupils can give you away, but at least for me they don't get very big, just bigger than normal)
225ug - haven't really had this dose often so will rather not commen
300ug - medium trip, all the effects from 150ug except stronger, can still function around people without being it obvious you're high
450ug - quite strong, all the effects from before but stronger + visuals that are more like visions (kinda like what people describe of salvia, except that you can switch between them and the normal world easily), it's kinda obvious you're high
Above that it gets even stronger, but never any hints of it going towards a bad trip. Duration also increases above 450ug, gets closer to LSD/LSZ or even longer. All the doses always continue to produce positive effects, no bad thought, scary visuals, physical side effects (nausea, high heart rate, shaking, too much stimulation)...
Really one of the top psychedelics ever, like you took all the fun from LSD and made it into a drug. The only thing LSD would be better is if you want to go to some darker places to think about your problems.
As for the stability/consistency of the blotters, the first I bought were in July, last in November (I think) and there was no noticeable difference. Same goes for LSZ. It doesn't appear that these LSD analogues are more fragile than LSD, at least not by any noticeable amount.