My current favorite is PRiVCY. Why? Cause this project shows real progress, has good community, good partnertship with Testament and good team. If you dont know what is PRiVCY, it is a revolutionary coin that focus on the privacy and security of its users. It is intergrated with TOR network and Stealth Address enabled to provide high element of privacy and security. You can check their website If you want to know more about the project and you will never be disappointed.