Trigun was one of the first animes I watched after getting into Akira ---> Dragonball Z --->Trigun. So it was big steps above dragonball and I still would say its older but still watchable/decent to this day but there are better series out there.
As far as Inuyasha goes... that trash just sucks. Apparently its over 150+ episodes and they still have the same bad guy Suzaku who basically acts like Team Rocket and never gets killed or beaten until he gets down syndrome. Not to mention lack of fanservice but that is a different story.