Yes I came to that realization a long time ago. Fuzzibunz' fleece attracts fuzzi's (lol). I was using sherpa inserts (they were wonderfully absorbent) and the fuzzibunz fleece got all "pilly". When I sold off all my fuzzy items, and just used joeybunz and picked all the fuzz off of them (or a clothes shaver found at jo anns works great too), no more fuzz buildup.
Then recently I got a hemp fleece sugarpeas diaper. It's so soft and lovely, but the fuzz is all over my fuzzibunz fleece.
I contacted mother of eden about it and they suggested washing separately. Well, hello! I'm doing this to conserve energy LOL.
So anyways, I just don't use the hemp fleece and sherpa diapers I have anymore, but it is a bit of a bummer.
On the flip side, I have some made-by-me diapers with malden mills fleece on the inside and they are clean and lint free when I wash with fuzzy stuff. So I do believe it is the grade of microfleece they're using on fuzzibunz.
As to whether some are better than others, it is entirely possible since they have made many fleece modifications over the past year.
HTH