KIS 2013 would offer the best protection, it's AV engine is well known and it's a good Firewall along with it as well, the only issue with it is, resource hogging though if you have a comparatively new PC you won't really notice it. CIS on the other hand is also good, but requires a lot of tweaking to get out it's full potential.
In terms of detection, CIS lags behind Kaspersky.
In terms of protection of keeping a clean PC clean both will do a good job at keeping it clean, though if it's installation on a already infected pc then Kaspersky would have an upperhand.
KIS also has some good extra tools like Virtual Keyboard, etc which is a simple yet effective tool for banking.
As for CIS ver 6.0 is good on default setting as exterminator stated above, though personally i find ver 5 better.