I have had one of their roof racks for a couple of months and have just bought one of their rear bars. The overall quality is probably better than I was expecting for the price charged. The roof rack has had a couple of the welds that hold the mesh to the cross bars crack, but this was an easy fix. The rear bar is a very solid unit. The fit for the car is probaly ~95% right. A few of the gaps are a little uneven, but you need to really look.
Can not comment on the bull bars or if they have copied them at all, however I have been happy with both my purchases from powerfull4x4