[cellardoor]

What it boils down to is that there are many types of collector.
The buy two, one for display, one for 30 years from now are a unique breed. We all share a common thread, we see something cool and we want to own it, possess it, make it ours. If we were different we'd just look at pictures of toys and never buy them.
It gets more granular though, within that archetype of collector are many psychological variants, just like our toys!
Some will never be satisifed.
Some will never be satisifed until they own every possible variation of that one great piece. What strikes me as odd about raf's collection is that I can barely see the differences he points out but i'm sure that's all he sees. I think that black widow MU is dogshit so I wouldn't buy it now. I bought it before as that was the only known option. But now she's retired and replaced with the avengers assemble fig as it's just great to look at and pose.
My Wave 1 Daredevil is now in the hands of a friend's kid because, hot damn, the comic pack version is way, way better.
But that's not to say the value isn't there, it's very much in the eye of the beholder.
That Warpath case is a good one.
And Vision is a hot-bed. There is no guarantee we'll see another released so we make do. The buck isn't great but the finish is fantastic and, when stood next to Quicksilver and Scarlet Witch, or hovering over the Avengers, cowed in front of Ultron, that's where I see the value in the figure. I did only spend £8.99 on it though so what do I know!