We run Hendrickson and have run Watson Chalin and Van Raydan. The newer Hendrickson SCT 13 is a good setup, kingpins and bushings are real easy to service.
It uses two piece spindles and the upper and lower bushings come as a unit that presses in. The axle like all later Hendrickson's are fabricated. Personally I like
the Hendrickson because of parts availability.