I would seriously consider using a Galvanic Skin Response gadget before going head first into this stuff. GSRs are much cheaper and easier to use and you can test the biofeedback waters with them to see if this is for you. Better yet, see a Biofeedback Practioner and tell him/her what you want to do. They can usualy steer you in the right direction and they usualy have years of experience.
You're getting into an expensive game that can easily cost you $2000 to $3000 for basic equipment. Why buy a Cadilac when all you need is an Echo.
Cheers!
