Okay, first off, you should watch the OVA. It's like a prequel, and it just makes this series even better.
The music is wonderful for this series! Really great animation and fight scenes too. If you want over-the-top paper action, here ya go!
Not much else to say, I highly recommend at least a few episodes before you judge.
Overall, if you like action, and you wanted more ROD after that OVA, ...