Being one of the first animes I've ever watched, of course it'd be my favorite. I have watched all the English episodes, but none of the English subbed titled eps. Maybe I'm just weird, but once I watch an anime in English, I can't watch it in Japanese.
The story is very unique. I remember when I was elementary school, I wanted to be a Sailor Scout, lol. This anime will make you laugh, cry, hurt, and happy. The romance between Damien and Serena was pretty much funny, and perfect at the same time.
Characters - Serena is just great. Clumsy, bit of an airhead, but loyal and strong, and will always have her friends backs. I didn't really like Rei, she just really got on my nerves most of the time. The other Sailor Scouts are okay. I didn't like Sailor Saturn though. Rene (Chibiusa) got on my nerves most of the time, but she can be okay. Damien is the typical male in a girly anime, so I don't have much to say about him, lol.
I don't have much to say about the sound. Same goes for animation.
Anyway, if you haven't watched this anime yet, I say you should give it a shot.