I haven't used a single wheel trailer. I've got a Burley cargo (two wheels) which does well with heavy loads. But riding with it is very noticeable. I've also got a Travoy, which mostly feels like it's not there. Depending on how much stuff you need to haul, it might be worth considering. Much easier for small/medium sized grocery runs (bring the Travoy into the store). Obviously, for camping the latter isn't critical ... unless you are stopping at stores just off the trail ;>