I returned my BD590. Every FRIENDS dvd I played on it would pixelate, skip, and get stuck around the 1 hour to 1 and a half hour mark. The fourth episode was unwatchable no matter what disc I had in. Brand new discs too, so that made no sense.
I also couldn't figure out how to make my MKVs and AVIs not stretched from corner to corner on the TV.
Lastly, whenever I watched movies, the disc drive was very noisy. Every few seconds I would hear it make a sound.
I went with the Sony S570, and so far, so good.