Sailor Moon is one of the many animes I've been curious to check out, so this thread has been very helpful for me too. Anybody know if the live action version is available anywhere in the US and if it's any good?
Back when my daughter was very young, we got into Sailor Moon in a heavy way. We have the entire series on DVD, including the final season of the original, called Sailor Moon Stars, which was never shown in the US. It features some gender bending characters and I guess DIC couldn't figure out a way to work around that for our overly-sensitive minds (UGH!).
I also got a fan-sub of the live series and movie and calling it cheesy is doing a disservice to cheese. I say that, but we still watched it all and honestly enjoyed it. It definitely suffers from a small budget. Luna the cat starts off as a horribly rendered CGI character but then suddenly becomes a puppet before finally transforming into Chibi Usagi. The storyline doesn't really follow any of the animations.
My daughter (now in college) did watch SM Crystal and said it was very good. As has been stated, it's mostly a remake of series 1, but it's more directly taken from the original manga rather than the cartoon. Plus, the animation is somewhat better.
If you can find the original Japanese subbed versions, go with those. The translations are more true to the script, where they curse and don't gloss over "controversial" subjects, specifically the sexuality of certain characters.