K5: why would you 'upgrade' from this?

The K-5 is such a great camera that I find it hard to believe that a K-5II will be enough of an improvement that I would be justified spending $1,500 or more to upgrade.

I like the K-5 so much that I recently bought a 2nd body for only $614. It's an Adorama demo body with shutter count of only 1,700 with full one year warranty. It's working great and no signs of being a "used" body. Looks like it came straight from the factory. I couldn't pass up that deal.

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Allan in Colorado, USA
http://sevenarrowphotos.zenfolio.com/