The Rife Digital ultimate sucks - I bought one and had it for two weeks. It possesses none of the qualities of a good rife machine. The straps actually gave me RF burns on my feet that are still healing (been almost two months now).
I returned it minus the restock fee and bought a BCX Ultra. I've had the BCX ultra for a few days. It is far far better. I'm having a problem determining which exact frequencies to run though. The preset programs seem to work - for parasites so far.