Some might argue whether we have to make a choice like this or not. Are mega-churches bad and something to shy away from? My answer is the same no matter what the church size is: Is truth according to the scriptures taught? Is the same gospel the apostles taught in Acts preached? And is the church encouraged to edify itself according to the outline given to us in 1 Corinthians 14? If these key elements are in place, things are probably good. If not...well...that's between you and God. Paul wrote to the church at Philppi...
Wherefore, my beloved, as ye have always obeyed, not as in my presence only, but now much more in my absence, work out your own salvation with fear and trembling. (Philippians 2:12)
That's not me being wishy-washy; that's me not being your conscience. When I started on this lengthy journey toward church in my home, the Lord didn't just flash me sign telling me what to do. In fact, he said, "I'm not going to just give the answers. I want you to look it up. I want you to be able to show others why you're doing what you're doing." Whatever your church direction, can you find where you are on the map of the scriptures? Are you in the Word or are you doing your own thing? By the way, you can be doing your own thing surrounded by hundreds of others...I'll keep you posted to the progress of the book!