My Barkley PC is still in the folder, they're mainly mid 90s stuff, so they're not all that expensive, and I'm not going to waste holders on them, especially now I'm trying to move them.
When I first got back into collecting, everything was in 9-pocket pages, I even managed to get a Trilogy Auto Focus onto them!
Now, all my Harris PC, even base are either in Top Loaders, or one-touch magnetic holders.
The way I look at it, if you're going to treasure your collection for a long long time, why not treat them right, and stick them all in holders of some sort!
Sure, i've spent a few bucks on magnetic one-touches, top loaders, and team bags, (which I need to get some more) but I think it's a justified method.