I watched it years ago, Nostalgia bomb.>>11836179
The OVA series was a two episode deal where they were just feeling out to see whether or not a TV series would be profitable. It takes place in the middle of the manga story. Pretty much more of the same shit, neither is particularly notable. First ED there (I think there were two) was pretty catchy.
I wouldn't recommend it, but if you don't have anything better to watch, go for it. The ending is interesting to say the least.