@ChristiJunior@Rasterman@SuperSnekFriend@bleedingphoenix If you appreciate old fight animations and are willing to completely ignore the story Vol 1-3 are watchable. The original creator was a fight animator not a story guy so there's a lot of ideas and not a lot of substance. Vol4 onward is when the new show runner takes over and starts making shit up so everything falls apart quickly.
As for graphics, I forgot what tool they used originally but they weren't making it in a professional modeling or animation package until later. Everything in the early series is ugly and it improves as the team builds up skills.