So, which has more value? Camps or Showcases?
I would say, it depends. If you're trying to cast a wide net, showcases or combine camps with multiple coaches are going to be effective, but players and TB coaches need to be pro-active in getting communication started. If you're targeting a specific school, get to their camp on campus, and be pro-active ahead of time with emails and video. It's okay to be relentless with reaching out to the same coach(es) repeatedly.
I took my DD to a camp at Oregon when she was in 8th grade, just for the experience...and because we were big Ducks fans. During a classroom session, Shannon Rhodes was talking about how she emailed the Oregon coaches every day. In her words..."stalkers get scholarships."