Perhaps it was just that I was the right age when the Partridge Family was popular but I did watch that show, while a few years later I not only felt no interest at all in the Brady Bunch or Eight is Enough (I tend to conflate the two, for whatever reason), I even felt repelled by them, somehow.

In addition to never having seen any episodes of Gilligan's Island (I'm going to soon) can I just say that I've never seen an episode of The Brady Bunch or The Partridge Family either?

Brady Bunch and Partridge family were in prime time when I was young, and we watched them; and, they were in syndication for years after, and we watched them (before cable provided alternatives). Brady Bunch is the sillier of the two, but it still has a goofy charm. I could watch an episode or two; but not a steady diet. I know them by heart. Partridge Family we did watch relatively recently and it still held up relatively well. The earlier seasons were a bit goofier and the latter preachier; but, from the start, the storytelling was a bit more mature and the music gave it a different dimension. The acting I would say is a toss up, as specific actors were quite good and others what you would expect for their age or the material (on both shows).

If you have seen either of the Brady theatrical spoofs, that is pretty much the tv show, without the ironic modern look back at it. Funny enough, I saw the second film in the theater and when Tim Matheson eats the spaghetti with his psychedelic mushrooms mixed in and starts tripping, seeing cartoon Bradys, I laughed my head off, but many seemed oblivious to what was so funny. I must have been the only person in the theater (which did tend towards a younger crowd) who remembered the Brady cartoon, from Filmation.

There was a Partridge Family cartoon, from Hanna-Barbera; but, it was actually a repurposed Jetsons continuation, with the PF characters replacing the Jetsons. It did have Danny Bonaduce, Suzanne Crough and Brian Forster voice their characters (I doubt they were deluged with offers) and Susan Dey did voice Laurie for 2 episodes. It does have Mickey Dolenz, of the Monkees, as a voice actor (Dolenz had been doing voice work for H-B for a while, including things like Funky Phantom). The Brady cartoon had all of the kids (the adults were never seen) for season 1, then some of them demanded more money and were replaced, for season 2.

I was too young to watch either of them first-run, but they were both staples of early 80s afternoon syndication blocks here in Pittsburgh. Of the two, I've seen every episode of TBB, but PF never really grabbed me the same way.

That said, they are nearly impossible to watch today, but I feel that way about most sitcoms from 1990 or earlier. They just don't hold up well from a comedic standpoint (so many of them, particularly the family-centered ones, are horribly corny), and the terribly-intrusive laugh tracks don't help much; if it's funny, I'll laugh, but if not, don't try to push me into a chuckle.

Did they not have the box set you wanted?