I bought a new one last summer just like what you are looking for. It is a Trailerman brand. It is made in southern Missouri and I bought it from Stephens Trailers in Taylorville, Illinois. I shopped several different brands and dealers and found this to be the best buy. I was very pleased with dealing with Stephens.
Mine has three, spring assisted ramps, radial tires and twin 10,000# axels. We hauled 14 5X6 bales on it without any problem. I also use it to move a Case IH JX100u with FEL between farms. It puls like a dream. I would highly recommend both the trailer and the dealer.