In 2009 I purchased a new Kaufman 25,900 GVW with 4 foot added to the length, twin jacks and the best tire and wiring options.
EXCELLENT trailer and people to do business with. Mine has a pintle hitch to pull behind dump truck and I haul a Cat backhoe or a Genie Man lift mostly with it. I have used my F450 to move this equipment which is a little lame but does get the job done. Bare trailer weight is 6000 + lbs. empty.
My only compliant ( had to have one ) is my trailer sits out a lot and the yellow paint started to fade within 1 year. No rust. Black should be fine.
I had extra lift springs put on the ramps and went with radial tires.