I purchased a set of these forks for my JD 3320 just last month. I put around 20 hours on the tractor moving brush with them on our property. I was considering a set of the Payne's debris forks, but I'm happy with this decision as the fork carriage provides much better visability for what I'm using them for.
They seem to be well built and I like the fact that the forks are fixed and tilt back or "dump" the load if I need. The max fork spacing is about as wide as the loader/bucket bracket, and they narrow down to about 6 or 8 inches I guess.
I'm within the free delivery zone and they showed up in about 3 business-days. Some assembly required, but no big deal. I suggest loc-tighting the nut/bolt that hold the fork rod onto the carriage.
Bottom line: I would buy from this company again.
-John