Our company has the "Triple Nickel" as we call it, but its the 77 series bender in your link and it works well.. Although lugging the thing around is a bit cumbersome (weighs >200lbs), it is easy to make consistent bends for pipe racks and such.
Not to mention Greenlee's 555 bending shoes will work on it
Mike, what they are showing in their catalog is simply outdated Greenlee models, I know this because we have a few of the Greenlee "sidewinders" as we call them, and we can not buy repair parts for them.
Greenlee is more than happy to sell us newer models though, which we do have a few of.