...about preferring the "earlier titles"...not sure about that for me...Black Market is probably my favorite record of theirs's, Heavy Weather is pretty damn cohesive, like an Ellington record, really/sic. I can and do frequently pretend that Mr. Gone and 8:30 never happened, and then it's back to Night Passage & Weather Report (2), where shit just starts getting dark and quirky all over again, just in a new way.
Point is, I don't really have a "preference" with this band, it's a more or less continuous arc for me.
btw - "Madagascar" on Night Passage is as close to gonzo DizzyBird bebop as this type of music gets. Virtuosity and imagination at the fullest speed possible. No other band had that, not like this. And even this band didn't always have it like this.