The church I belong to is the body of Christ. It is not an organization, but the spiritual body of believers who follow the teachings of Christ and believe on him for salvation. This is the same church established in Acts 2 and that is the church of which I am a member.
I do attend worship services with the United Church of God. United was formed by approximately 20,000 former members of the Worldwide Church of God. Corporately, United can be considered new since it was incorporated in 1995.