Good company and good trailers, I run 2 tri axle Brian James tilt bed trailers that have the indespension axles both are around 8 years old and are still good, also run 2 ifor williams box trailers which are on springs, all my trailers work hard and are normally always at there max weight, 3500kg.
I sometimes prefer springs due to the weight they carry but the indespension axles cope just as well.