I love being a fluffer for sure, but I think differences in acid quality having any consequence other than for sheer potency has no scientific basis and is most likely to be superstition. Yeah it appears supported by people's experiences but that is so easily explained by placebo.
Honestly I used to have 'faith' in some possible scientific explanations that were explored (see the dirty acid FAQ and LONG debate - google it in Bluelight PD), but after much debate it didn't give a satisfying answer - so, sorry but it looks like it's all in your mind. And not to forget!! Marketing / advertising ploys from dealers. Sure there is more than one way to recrystallize LSD, or apply it on a carrier etc, and some batches are better (that is: more potent) than others but even pharmaceutical grade Sandoz LSD gave people 'dirty' experiences so that pretty much blows a hole in any belief that needlepoint or fluff or any supposedly pure acid actually gives you that clean feeling.
Sometimes more than other times, we are in great luck and LSD just feels mindblowingly transparent. And yes it's awesome, but don't fool yourself with associating that it must be anything other than how the acid works out that time.