Our company just had two mfg. reps. come out to our job to demonstrate both pullers that you are referring to.
They look like they would work great for pulling feeders into subpanels but the problem we had was that we were pulling 300MCM int our main gear from a pull box and there was no way to set up either machine. We ended up using the ultra tugger anyway.
One thing that the rep mentioned is that thier machine would fit into a hitch receiver in the back of a truck so that you could pull site lighting feeds. That sounded good because both machines could pull much faster than the ultra tugger.
Maybe you could setup a demonstration with a mfg. rep. on one of your jobs.
