My wife and I each own one set of C3's. Like Coytee we too have kinked cords....very kinked cords, it irritates me quite a bit so I'll stop talking about that issue at this point.
For me the stock ear gells never sealed completely so I bought some Comply Foam tips for them. With this combo I can unabashedly state the C3's are nothing short of incredible. I'd like to try the X10's or X5's at some point. I wear my C3's to work out, sit around the house, on planes....virtually anywhere I wish to privately listen to music. Their confort is unsrupassed. Their sound is amazing.
I try to treat them carefully becasue of the cord issues.
Overall with the Comply Tips I am very soundly in the camp of the satisfied.
If Klipsch offers another sale I'l likely buy another set of C3's and a set of X5/10's.