Having used hundreds of meditation techniques, I would also recommend the Open Focus technique over Centerpointe Holosync.

Centerpointe requires listening to the CDs and creates chaos in the brain in an attempt to apply Ilya Prigogine's theories.

Open Focus can be done without listening to the rccordings. It requires your active participation and concentration as you focus your attention on the exercises. Holosync does not require any attention or concentration and you can just drift off to sleep.

Open Focus more approximates the mind state of zazen meditation. Its benefits are greater.