Look at the Eclipse trailer. It is aluminum so it's super light. Mine is just the basic 2 horse with a straight load ramp. You can get it with a tack room in the front part, and a slant load. Here's the link, but you can also get an extended length trailer too. They have pretty much any type of trailer you want and I love mine !
I just bought a trailer less than a month ago and there were a TON of trailers listed. Also make sure to stop or call your local trailer places, when I bought mine and took it down to get some minor repairs I pulled in their lot and they had 3-4 used trailers that wern't listed on their website that would have been options.