I liked how fast it was, though looking backwards so much might be a strain if there was a lot of clearing to do.
I was intrigued by the Marshall tree saw in that it was FEL-mounted, didn't throw debris, allowed for limb trimming and could (to a degree) actually pick up cut trees without having to add a grapple (some of the same features that make me consider a shear). Also, for taller trees than the little cedars, I think the more pointed push bar is better since it would tend to direct trees falling toward the operator off to one side or the other. I'd say the Turbo Saw is faster, though, which could make a big, big difference in a large, open field use like yours.