I have used a BOB trailer way back when but "upgraded" to an Extrawheel Voyager which I have been using since 2011 on both road, gravel rides and single track mountain bike tours when I have needed the extra carrying capacity.

I have found it very good and will continue to use it both behind my Surly Long Haul Trucker and my Salsa Mukluk fatbike when remote bikepacking.