Bowflex changed the name of the Sport to the Blaze. The Sport is/was (It's still around and for sale especially online.) a really popular machine. The Blaze will run you $900 which is $100 more than what the Sport went for.
The Blaze comes standard with 210 pounds of power rod resistance. You can add more resistance and upgrade to 310 or 410 pounds - each upgrade will cost you $99.00.
The Blaze uses a "rod system." These rods are hooked to a cable pulley system. You can hook one, two, three, four or all of the Power Rods to the cable pulley system and go from as little as 5 pounds all the way up...