Personally I think zerocoin protocol is better than zerocash protocol. Zerocash protocol hides everything so if the dev leaves a backdoor and secretly creates coins, people will be difficult to discover it. While zerocash you can see the total coins minted, so dev can not do things secret behind the scene.
If you mine this, be VERY careful as the x12 miner executables have been compiled by the dev. Double the risk of putting unknown software on your machine, because you have the wallet AND the miner. Would be good to compile both from source if you plan on mining this.