I have a 986... my biggest beef with it is the titanium alloy cylinder, and how it needs special precautions while cleaning, lest you screw up the protective coating/anodizing that inhibits flame erosion. While titanium has a high tensile strength, it is a soft metal that will get flame erosion without the protective coating.
I did not know that until I bought mine, and read the warning in the owners manual... otherwise, I would have passed on it. I don't want guns that require kid glove treatment of some manner.
Not my gun, or picture, but it illustrates the issue. The owner scrubbed the cylinder face clean, like what many do with stainless steel guns to remove the burn rings, and unknowingly stripped the coating off, it didn't take long for this to happen according to him:
Probably the reason Jerry Miculek just leaves his Ti cylinder guns alone to get like this... looks like crap but doesn't affect accuracy, well at least not his