MountainTop and Ignite seem fine to me.
I really can't imagine why anyone would have a problem with doing a Christian summer camp for jr high and high school kids. What's all the fuss about? In addition to our summer family vacations we send our kids to a one week camp every year. One of these camps had over a 1000 kids from various Christian backgrounds all coming together for a week of fun and fellowship i.e. Hume Lake:
http://www.humelake.org/content/yc_.php . They had a great time, made friends, learned, played sports, etc. What's wrong with that? They have since graduated from high school but they have very fond memories of those days at camp.