There is a website
www.brainsync.com that offers products for relaxation, expansion, memory and all the other gizmos. There are a bunch of demos on the site (although they are very short) and they sound very soothing. On the site they have research study, recommendation by physicans & psychologists and clinical tests posted and they sond promising. Their prices are UNBEATABLE, mostly $10-15. Do you guys know about them? Some of you are very expert on these things - any comments? I have been using H/S A.P. for a couple of months and just ordered Natural Brill a few days ago.