Shorty,
the "M5" is what was first released as the
GreenGlides M5 or model #GG-M5
It is basically a Mytee M-12 Body with a totally different internal component arrangement.
The first thing you notice is the Dual 2" stacks in the waste tank, each is fed with a high perf. GS vac motor (115cfm) so it's a 230 cfm machine, those are runing at 146" of water lift (that is a hell of a lot for a centrifugal vac motor) and is reasonable at the 11-12 amps each draws.
Then it runs a 600psi pump with an oversized cam and motor to give higher flow, which is driven with a 1/2hp very efficient motor not a 1/3hp that other machines use.
The high flow pump is plumbed with an unloader, not a pressure regulator, care was taken to oversize plumbing or should I say not restrict plumbing like so many machines do.
Add a Shur-flow APO, and mechanical Auto fill and 15 gal tanks and all the modern stuff like circuit locators, 2" hose hook ups, coolcuff ready, big wheels, a professional look, and you have a very impressive machine for $2500.
It'll make the recoil crowd cry...but sometimes the truth hurts.