I think I would pick the 5 different cels.
I'm typically not much of a sequence collector, although I have a couple of sequence mates in my collection. But, where wishlists are concerned, I think I would be so happy to find one of those items ... especially if it was my number 1 wishlist item of all time. I think I'd be content with having that one, and then spread my money around to try and make more of my celluloid dreams come true.
Now, if I did find my #1 wishlist item ... and then a sequence mate that I liked better popped up, I would probably go for the sequence mate. And, if I got it, I would, most likely compare the two side-by-side and then sell whichever one I liked less.