NC Hauler, while the GVWR needs to be taken in to account, so does the dry weight and carrying capacity.
There are some lighter 5th wheels that have huge carrying capacity and a 10,000# to 12,000# GVWR and under 8,000# dry weight or less. So in reality both weights need to taken into consideration.
Then there is the subject of GVWR of the TV, and this is where personal choice comes into play. Most realize the GVWR of 250/2500 is based on tax and registration laws, not the capability of the TV. Ford offers a F350 with GVWR of 10,000 do you really think that is all it can carry?