I have a Sig GSR 1911 (5"), and the Sig Platinum Elite (4").... both have been very fine guns, and I'd have no qualms about rating them as excellent firearms in all respects....
Having said that, I have no experience with the C3, but I wouldn't see any reason that the C3 wouldn't be of the same quality as it's larger siblings.
NRA Life Member ... Marine Corps League Life Member
Freedom has a flavor the protected can never taste...
USMC 8652, 2531, RVN Jun '67, - May 69
Some of my toys