I have a Galactic z-body with a retro valve, benchmade 45 grip, dyna mount, 48ci 3000psi pure energy, and smart parts, dye and armson barrels.
Besides looking incredible, the z-body shoots comparable distances to the Tippman Flatline system. An added benefit is its use of autococker threading. While the use of large bore barrels enables greater backspin hence greater distance, one may also use small bore barrels and achieve equal distance to the automag.
Because the z-body is relatively rare in most paintball circles and the company is located in Japan, the price is a little steep. Also it is moderately difficult to find replacement parts for it.
If you are looking for a marker that is ahead of its time and lives up to the hype then I would definitely recommend the Galactic Systemz Z-body. It is a head turner and a pleasure to shoot.