Trigun is considered a classic, and I could certainly see why. The characters are presented well and the story runs smoothly. It really achieves the steampunk western feel it is shooting for.
And for what it is worth, Trigun is a good show. It is only brought down by my tastes in that I don't really enjoy westerns and it was a bit too episodic in the beginning for me. It is also brought down for the art, as a reboot would make this at least a 7 for me.
But if you enjoy the theme than I have no doubt you would enjoy the show, because Trigun embodies it very well.
For me this show had a somewhat similar feel to Cowboy Bebop although the settings are different and Bebop was more episodic.