I have looked at them but I tend to shy away from Century Arms guns all together... I will say I have owned some AKs from them but its hard to make an AK design fail.
I would probably spend the extra money and get a Vector Arms HK knockoff.
I own several CAI guns and I haven't had a problem with any of them. My Century Cetme is the one I was most worried about and it had no problem eating commercial .308. Haven't seen any Century C-93s but I'd just do some research and then check one out really good before buying.