They are very similar. Cyp has a slightly shorter half life.
To be honest, a lot of guys will tell you they prefer cyp since enanthate is extremely common in mexico and cyp seems to be more common in europe. For some reason the mere manufacuting of the steroid in europe adds some exoticness to it.. I think that's why some guys prefer cyp although there is no practical reason to..
I bet you could give bi-weekly injections of either and no body will be able to tell the difference.
Andy