It's decent up through the Soul Society arc (up to ch 170~ish). It starts going downhill pretty bad from there.
You mean that rhetorically, right? As in "this is an example of a really long manga series" not "actually go and read Inuyasha." Right?
Anyway, if you're daunted by a large amount of chapters, I'll suggest Vinland Saga for your fighty manga needs. It's relatively young, so there isn't a huge chapter buildup yet.
But don't take my word for it. *ba-doop-boop*