The way i look at it this... most portables use similar motors and pumps, the real magic is in the design and construction of the body...
Ashby's, whether you like them or not have created a very well thought out portable machine which is as solid as a rock using high quality 5.7 motors instead of the 6.6's.
The attention to detail is what partly sold me the machine... integrated cable and plug management, a waste tank which empties everything due to its shape, recessed valves and controls, delayed motor start up for remote switch on,easy access to the motors etc.., sturdy lockable front casters, external silencer which does actually reduce air noise massively, shower proof body.
Unless Extracta has a machine which significantly out performs the competition i don't see them breaking any new gound.