Depends ... hard to answer that one ...
I guess this poll is the result of the article discussion on K5II vs K5IIs results.
If we take that case, for me, personally, upgrading even from a K5 to a K5IIs is pointless. All my "serious" work goes in PP using PS. I can do anything I want in there and a slightly, little bit, sharper image will make no difference (for me and my PS work environment) at all.
So in that case, upgrading from even a K5 to K5IIs is pointless for me (mind you is more than $100 to do the upgrade).
However, if I would be on the market looking for a new camera ... and not having my K5 ... I would probably cough up the extra $100 and get the K5IIs rather than K5II.
But after more thinking I reached the conclusion that what I would actually probably do is to get a K5 (better money savings) and use the rest of the money for some very good glass.
So I guess what I am saying, for me and how I work (all manual and PP in PS), a K5 is good enough and I see no real advantage upgrading to a K5IIs. Now if that K5IIs would be an FF ... completely different story
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