I have very much been a fan of GatorMade trailers. I looked at many trailers and those and the CornPro trailers are the ones locally that seem to offer a lot for the money. I have had about five different brands of trailer, and I will say the GM trailer is the best of the lot. Some have been OK but others..... The thing I like about both brands mentioned are that they have good quality priming and metal treatment and use high quality brakes, axles and tires. To me, one can tell a lot about a trailer by these few details. All in all, for what one gets these brands are tough to beat, but as George mentioned, there are many good brands. There are also many poor brands that are not worth the money and might not even be safe to use. As far as size, you could easily get away with a 7000# gross trailer, as those type trailers usually weigh about 1200-1500# themselves and the 2520, ballasted and with loader and 60" BB would weigh around 2900-3000#. This would give you a total weight of 4200# or so and would be easily hauled. The other nice thing is that if one day you needed to upsize your machine to a mid-frame, you will still be OK or gross weight. A large framed JD, though, would be too heavy for a 7000# trailer, of any brand.
John M