Upper Deck was one of the worst of the ones to build sets from back in the early '90s. I recall buying pack after pack, or even full boxes and coming up a few cards short. This wasn't unique to myself, my Father, numerous friends, card shows, and shops wouldn't yield the required cards. Rarely would it be the stars, or rookies either, almost always some commons.
This was a problem across the board with their products. '90 and '91 baseball drove some friends crazy. I should've learned from that but tried building the '91 FB, '92-'93 basketball, and '91-'92 hockey. The hi-numbers in the series II was really bad at times with there being as little as 2 or 3 of them in the packs to go along with series one all over again. Won't even get into the madness their hockey sets presented with retail, hobby, jumbos, locker packs, French, etc. It caused my Father to just give up after a couple of years because all he was doing was UD hockey. He traveled a lot more than I did, and it was still hard for him to build sets with him hitting more spots in different states. The factory sets seemed more like an insult to us at the time, but I still bought a few to save myself the hassle when I could, if one was going to be made, especially with hi-numbers.
I don't recall Hoops, Skybox, Fleer or even the mighty Topps being no where near as bad with any of their sports when it came to making sets. Proset could be about like UD with some sets, and never tried to build Donruss, or Score, besides the first Pinnacle FB so can't really say how they were.
The glut of different sets, different inserts across a multitude of pack types, and the headache of building base sets is what caused me to stop even trying around '97 or '98. I checked a Beckett at the time from each of their magazines from the same month, for how many sets were out for that current year, and that was my wake-up call. Baseball had 38 sets listed, not counting inserts, separate series, updates, retail/hobby or any of that nonsense. Seems FB had 39, hockey 36, basketball was about the least at around 32, heck even NASCAR had 30 something sets. I knew something was very wrong, and decided to pick and choose wiser.
So since then I'll mainly buy singles, though there are exceptions where I at least would like to build a set. Oh and no more chasing draft picks, I had learned that already back early on though, saw too many "sure things" fail. I won't name anyone, as I know some did improve, and it blows me away people collect some of these guys still when I consider them wash-outs.
Like I said before, non-sports is usually a different animal. I'll sometimes try for a set if I like it, unless it's just a particular person I want their auto, or base cards of. Have also just collected the promos from some sets of those and stopped there.
"I believe there ought to be a constitutional amendment outlawing Astroturf and the designated hitter." - Crash Davis