Tried the other brand at Costco then come home and researched and found Hypervibe and began to understand the focus on frequency capability. The videos on youtube are slightly dated but still relevant... convinced me that this was the brand to invest in. Ordered a G10 and from that moment i have never experienced customer support at such a high level, shipping info, emails, numerous phone calls following up to insure questions answered, trainer support - wow ! the machine is ROBUST, no rattles etc, very solid. The control system is super cool with the animated exercises and Ive never felt more invigorated. Highly Recommend.