AdultMovieNetwork used to have some videos that you wouldn't find on MovieErotica, but that no longer seems to be the case (not that this is a big deal given their medicore quality). Both sites give you over 2,000 photo sets that contain medium-res pics. There are no movies in the main collection on either site, but both provide you access to over 300 feeds that cover tons of hardcore niches.
The most compelling reason to join either site is the access to the more than 5,000 streaming DVDs. They are truly stellar and far superior to anything else offered on the many other third-party links. This site wouldn’t be worth joining if it weren't for the lineup of streaming DVDs, but even with that the high price tag is a bit of a deterrent.