Hmm, I don't have a recommendation on a specific brand. I've never had warmbloods so I've not needed a WB size trailer. I myself have an 3-horse slant goodsneck Exiss and I like it alot.
Certainly you want to stick with aluminum (not steel) for the lighter factor.
I myself think that goosenecks tow and handle WAY better than a bumper pull, and are a smoother ride for the horses. I'll never own a bumper pull.
A 2-horse GN with WB size might be hard to find, but I know they are out there.
I myself also tow with a 1/2 ton pickup. I sure wish I would have a 3/4 ton but it's just not in the finances right now, unfortunately.
∞•*˚ Βгįťţαňγ ˚*•∞
It is not enough to know how to ride; one must know how to fall.