Yes, there are 4 or 5 different accounts that he wrote. I've read them all, and I've also read several accounts by people that related what he told them orally. They all agree in the fundamentals, but disagree on details. For example, in the canonical account (what we have in the Pearl of Great Price) he said that two personages appeared to him, God and Jesus. In some accounts he just said that God appeared to him and didn't mention Jesus. That type of thing doesn't really bother me; if I were to describe an experience that happened to me to different people and at different times I'd probably emphasize different aspects of the experience and maybe get some of the minor details mixed up.
I agree. In fact, I remember reading an interview with one of his neighbors where the lady said something like "He was such a nice, hardworking, honest boy. It's a shame that he went off the deep end." (She didn't that colloquialism but that was the sentiment.) In other words, if he had never had mentioned visions/Book of Mormon/etc., she would have described him as a nice, hardworking, honest boy.