I've been leaving drool marks on the living quarters slant loads with dividers, padding, and fancy pull down windows, but realistically, a used 3 horse combo stock is probably more my speed (and price range).
Here are some of my favorites, if money was no object:
Sundowner's 3 horse gooseneck (730 series)(Also - not in the running, but I like'm! - Brenderups. These little guys are just cute! The Volkswagon Bugs of the horse trailer world, perhaps?)
Equispirit's SafeLoad 3
Hawk 3 horse slant w/ dressing room
Featherlite 3 horse stock combo
So other than the mechanics - height of trailer, adjustable hitch, checking tires, floorboards, axles, rust, etc., what do/would you look for in a horse trailer? From a practical standpoint, are there optional and/or standard features that you just love, love to hate, consider necessary, or would look for/look to avoid if you were to buy another trailer?