I need to watch it. I avoided Stampede since the art style is so different compared to the manga but it’s supposed to incorporate much of the manga that the original anime diverged from. So it’s worth watching both. Like old fairy tales that have a bunch of different takes on them that people enjoy numerous of

Original at least for the art style and mood and music. 90s anime has art and music much different than today. Like Cowboy Bebop and Hajime no Ippo would sound way different and way different lighting today if remakes today happened with some story changes. Trigun Stampede people seem to like and people seem to accept both aren’t 100% faithful manga adaptations