The 700 is cheaper, stronger, has better gearing, is far more common, and is rated for truck use.
Those things are completely subjective. Cheaper? It depends. Stronger? Stock yes but may not matter, depends on what engine is in the vehicle. Rated for truck use? We don't know if it matters in this case.
The 200 can be built to be stronger than the 400 and is easier to hook up, and is shorter. It's an easier swap, but the other things might outweigh that depending on its usage.
