Surly Ogre

The reason I chose the Extrawheel Voyager was (mainly) because we saw one at the top of Trollstigen, and if someone can ride it up and down that then it's clearly the choice of hero's.

However, in addition to that I liked the single wheel- it is suitable for off road use as it tracks your rear wheel, so will happily follow you down (not very) technical single track, or, more to my use, if you avoid that big pot hole with the wheels of your bike then the trailer (odds-on) will also do so.

The racks mount the panniers low- in the low-rider position so the weight is below the axle line, even though they can get 60 litres of stuff in the weight distribution just makes the bike a bit more ponderous when out of the saddle- when seated it just feels heavy.

You can also get a secondary rack that mounts over the wheel, to allow yet more stuff.

Means you can mount front panniers on the rear wheel for heal clearance, then rear panniers on the trailer- mean that the steering is not affected as there is nothing on the front fork (and you can use a carbon fork).

For the bike I'm going to use it on it also means that you don't need rack mounts or, indeed, a rack, to spoil the lines- once you get where you are going you unhitch the trailer and all trace of luggage hauling machine is gone.

Another vote for the ExtraWheel.

I tried one for an overnighter in the woods with it full of beer, and a rear rack full of beer, food and tents. Nothing on the front as forks on that bie wouldn't allow it and TBH panniers or weight on a MTB when your trying to ride trails isn't going to end well!

With the extra wheel unless you load it heavily (20kg+) you will barely notice its there, as you go up and down rocky/holed trails it gives an odd sensation of pushing and dragging, and occasionally you can get it to bounce off the ground, but it always seemed to be still firmly attached, even on the way back the next day when none of us were feeling like taking it easy or even caring.

It attaches to a special QR with a funky piece of metal work that pivots around the axle, so its the most gentle way (on your frame) of pulling a trailer.