I am not a part of any church. I teach a new convert class out of my home on Monday, have a fellowship dinner and bible study out of my home on Thursdays. I go to a bible study at a local church of God on Wednesday. I go so a Church service at the prayer Furnace in Fredricksburg on some Fridays, and I attend a home church at a mentor of mine home on Sunday nights. I believe when Jesus tells us to come out from among them in Revelation 18 He was referring to the local traditional, instatutional protestant church.
Not that i think every local church is evil or every home church is correct. It's not the church building that makes a gathering wicked. You can gather in a barn or in your living room, or in a park, but if the doctrine of Christ isn't being presented in Spirit and Truth, you really haven't "come out of her." Some have left the churches and started their own, but they have brought out the same teachings they left behind.
We must teach the doctrine of Christ not of man, and teaching it in the Spirit of truth, regardless of what Church we attend.
Long story short. I am a member of the remnant of true believers, the true Church of Christ. with no affilition with any institutional church.