I have a Nomad. It replaced a 2-children bike trailer as the children are now too tall for the trailer, the old trailer is worn out (more than 8000 km in all weather), and I wanted a trailer that could be useful for touring. All in all, I went for the Nomad because I thought it would be relatively unobstrusive and fairly lightweight, and so far after a little over a year, I am quite satisfied.

Differences?

– The Nomad uses 16" wheels whereas the Flatbed uses 20" wheels. I think it's a trivial matter unless you ride a bike or trike with 20" wheels or if you ride on soft terrain.

– The Nomad is 7" narrower. I find it makes a good difference. When I was riding with the 2-children trailer (with 32.25"), I felt like I was using a bit too much space on the road. Not that much a problem on city streets or roads with a good paved shoulders, but a bit more problematic when riding on narrow, high-speed 2-lane roads. The Nomad feels like it's just about my width, so it works fine on the road. And if you like bike paths or multi-use paths, you'll have less "squeezing" to do in tight spaces.

– I don't know how your appartment or your brother's is made, but my kitchen is at ground level. I had to cut the axle of the 2-children trailer to shave the 0,15-0,20" it needed to go through the door. The Nomad fits through the door like a charm, which means I bring the loaded trailer in the middle of the kitchen.

– On the Nomad, you can remove the cover and fold down the front and rear panels. It then looks and feels like a Flatbed... except it's 4" narrower. You'll have to decide whether 18" inside width is enough for you.

– If you want to carry groceries or anything loose with the Flatbed, you'll need to add a plastic basket on it. If you travel most of the time with the Flatbed and basket, your trailer will be heavier and will stick more in the wind. Or you run the chance of NOT having the basket when you need it.