The DL-4400 has what CSI calls a dog leg (DL) style saw box which gives the loader operator a better view.
DL-4200 Lo-Pro
The DL-4200 has a low-profile sawbox for better visibility and a belt drive for smooth and fast cut cycles.
MS-3100
The MS-3100 is permanently mounted to the loader trailer deck, so there are no messy hoses to couple when moving to different landings. This makes it quick and easy to setup and transport!