This show holds up very well!
I remember watching this show in reruns on Sunday mornings in the late 70's/early '80s as a kid. I liked it then, but was really into Bonanza at the time.
Watching it now on INSP, I think that it is better than Bonanza was during the same time period. It's unusual in that all of the lead actors never really were leads in any other series, but they were used as character actors A LOT. It's like it was an all-star character actor cast--but they played very well off of each other.
I have always had that contagious opening theme bouncing around in my head. It's awesome!
Fred