Price wise, I think they are all about the same.
In order of cleanliness (cleanest first) for the person hitching up, or sliding the hitch into the receiver:
1. Andersen -- Uses no lubrication, anywhere.
2. BlueOx -- Hitch head is lubricated internally (with a grease gun) and the ball is lubricated externally. The bars snap into sockets on the hitch head.
3. Equalizer --- All lubrication (bar ends and ball) is external.
In order of noise (quietest first):
1. Andersen and BlueOx, IMHO, are pretty much the same.
2. Equalizer has a little squeaking and groaning during turns and backing.
Front axle weight restoration, first one best:
1. BlueOx and Equalizer --- Pretty much the same
2. Andersen -- Is a little soft, compared to the others. Some users have reported, it doesn't restore enough. I have one (I also have a BlueOx). Andersen doesn't restore as much weight as the BlueOx, however, it does meet the restoration specs for my tow vehicle. Some tow vehicles require 100 percent of weight restoration, some require as little as 50 percent.
In order of hitch weight (lightest to heaviest, including bars and snap up brackets, or Andersen chains and trailer frame parts):
1. Andersen -- 60 lbs
2. Equalizer -- Approximately 95 lbs
3. BlueOx -- 108 lbs
I prefer to use the Andersen because it is quieter, lighter (While on a road trip, last summer, I had the misfortune of testing the sharpness of my knife. The rest of the trip, I had to do the hitching and unhitching with one hand. That included putting the hitch into the receiver), and cleaner (If I wanted to put it in the back seat, I could clean up afterward, with a vaccum cleaner. No grease spots).
