First of all, the cover of this set is misleading because it lists John Candy and Catherine O'Hara as though they were on equal footing with the rest of the cast. But if you're a big fan of either, you'll be disappointed because there's hardly ANY of their material on these disks. Tony Rosato and Robin Duke are funny. So was Shemp Howard. But we all know how we feel about those Shemp episodes! Not quite what we paid the admission price for.
Secondly, as others have pointed out, this is a random selection of the early half-hour shows, with some overlap of later "best of" shows which are already out on DVD. And not one bit of Harold Ramis. (Some ads for this set even mention Martin Short, who was nowhere near this project!)
But thirdly, this still is a very, very funny set. If you love SCTV, you will laugh your way through these discs, with lots of Bob & Doug, Count Floyd, and movie parodies such as Taxi Driver as done by Dick Cavett, etc. This may be all we ever get of the early years, so if you're a fan, grab them while you can. What's next? SCTV...the Cinemax years??