The 47 has the novelty of being the first year of the New Design. Other than that, there were only subtle changes. I would use the one with the least rust. Don't get too carried away with the addiction or your place will look like mine.

https://plus.google.com/photos/1081...9306451202&oid=108197707187186692269

https://plus.google.com/photos/1081...0467998082&oid=108197707187186692269

And those two pictures are less than half of them.