We've used two other cheaper e-stim units provided to my son. He reported not feeling nearly "flushed" or refreshed after and I can only attest to the fact that neither was as solidly built as the MarcPro - they felt rather light and cheap. However, I only recently started using it myself. I can definitely report a HUGE difference in recovery speed and soreness issues after weight lifting workouts. As to the price, I've just ordered a less expensive unit. I'll try it as soon as possible and report back. If it does indeed work as well, I'll probably buy a couple more for my pitchers.