I went to MHSSC this summmer and it was super sick. It's less expensive because they don't have high name pros, and the park is smaller, but unless your pushing pro, or your warmup run consists of corks, the camp is perfect. Its extremely lax, so you can mack with the ski racer girls and get drunk every night if you feel like it. The freestyle coach is Malone from the Surface team, and he's a rediculously good coach. He knows exactly what you need to do to land any trick. They have 2 olympic tramps, the food is really good, and they have paintball, etc.
Chill ass camp, cool coach, cool kids, cheaper. Windell's is an amazing camp no doubt, but MHSSC is legit too.