From what Ive read, these tones dont work on everybody. Fortunately Ive had good luck treating migraines and insomnia with the tones designed specifically for those problems -- these were the issues I was looking to resolve so I havent really given the other tones anything but a brief listen.
The Binaural Beats version worked well for me too but wearing ear/headphones to bed was a literal pain.
stellatrout about Mind Wave 2, v1.5