Chris,
I think you should take a second look at those forks that, on the surface, seem a little below the capacity of your loader, yet you like them for other reasons.
First, reputable companies rate their products with a standardized safety factor. For example, if a 5/16 inch grade 40 chain is rated for, say 5000 lbs, the actual tensile strength of that chain might be 20,000 lbs because the standard safety factor for that type of product is 4. If forks are rated with a safety factor (not necessarily 4)your 2000 lb fork isn't going to fail at an occasional 2100 lb.
Second, when a reputable company rates a fork, it should be at the worse case loading condition that would be reasonable to expect in normal use. In this case, probably a load concentrated at the tip of the fork. So while your loader is rated at the pin, the rating at the end of the fork could be only, like, two thirds of that, depending on the fork length and the loader geometry. And if the loader spec gives you lift capacity at the pin and another capacity at a defined point out from the pin, it's then an easy calculation to extrapolate the loader capacity at the end of, say, a 42 inch fork.
Then, if such and such forks have a certain rating, is that rating for one fork supporting the whole load or for two forks supporting an equally distributed load?
I doubt if you will get these answers from most frontline sales people.