when I sold my collection, 4 of the 950 were in slabs. One rather valuable one is one we would periodically read but when it came time to sell, I needed to come to an agreed monetized value so it got graded and slabbed. Without the slab, it's the subject of arguments enhanced by five figures. With the slab, it has had a monetary reference placed on it. . Don't slab stuff that doesn't meet the criteria. Bagged and boarded is fine unless you are getting ready to sell. Buying unslabbed is trickier and goes back to "Buy the book, not the grade.". I still have all my JIM and Thor, all unslabbed. I like reading mine still.