We recently got an AdvantaJib Lite (with the extra springs rated to 15lbs). The Jib works really great... with our EX1. The Scarlet (13lbs with lens and v-mount battery) is just to heavy for it. The hydraulics in the jib just cannot handle the extra weight. It is so difficult control it was really disappointing. When we put the EX1 (about 7lbs) on the jib the difference was NIGHT and DAY!! I'd definitely keep the AdvantaJib if I was using a lighter camera.
Since I need a jib that will handle the Scarlet.. I'm still looking. Specifically I'm looking at the EzJib with the extensions and the EZ Head Lite (rated up to 15lbs). Has anyone actually put the Scarlet on this remote head? How does it handle? Do the gears slip? Even though its rated to 15lbs, is the 25lb EZ head necessary for good control? Anyone who has used the EzJib with the remote heads and the Scarlet/Epic please fill me in on your experience :) I'm eager for some feedback before I make the switch here soon.