It sounds like you have already made your choice, so just let me confirm it as a good one. I have owned two K-80s; one a 28" skeet gun and the other a 30" sporting clays gun. I have since sold the sporting clays gun because for a brief, silly moment I thought TWO K-80s was a bit excessive. To paraphrase someone's sig line, there is no such thing as too many K-80s.
I have owned the skeet gun for 22 years and have shot it steadily at skeet over that period, and have used it extensively for shooting in Spaniel field trials. It is threaded for Krieghoff choke tubes, which makes it quite versatile. At 8+ pounds it is heavy, but you can pound the rounds through it all day, every day without recoil fatique. The best news is that in 22 years I have never had a single mechanical failure, and the action is still tight. I have had the stock refinished due to rain damage, but that is not the gun's fault.
I offer a word of caution, however. It is a well built and mechanically sound shotgun, but it is not magic. It still needs to fit you, and you may have to get the stock adjusted in order to get that perfect fit. I had the stock adjusted on mine within the first six months of owning it (and the sporting clays gun) but once done you don't have to think about it again.
Enjoy your gun. You won't be disappointed.