The EMX is a Rife Plasma device so they are the same. Rife frequencies can be delivered in a number of ways.
The Mag Pulser has nothing to do with Lyme but is helpful with lymph issues. The entire Beck's system is a good thing to have but has nothing to do with Rife.
The Rife book gives an overview of what others have come up with. No one can tell you what to do only your Medical Doctor can legally diagnose and treat your illness.
We are allowed to use Rife as experimental devices and as such I nor anyone else can tell you what to do.