Obviously, some mixture of those things is best. I chose doctrine but I think the opportunity to serve the body is a very close second. It was interesting thinking about what had driven my church choices regarding doctrine. For the most part it was secondary or tertiary doctrinal choices that drove me. An Arian church wasn’t an option at all but when it comes to membership, a non-baptist, cessationist church would almost have to be the only option available before I would choose it. Interesting question.