How much does the 1500lbs Blue Ox cost? If more htan $625, then that would be 1 reason.
The Blue Ox site compares the SwayPro to "50 year old technology with clunky steel cams or friction sway controls". It does not actually say that it does not use friction. And note that the term "friction sway control" refers to the old stand-alone sway bars, NOT anything used in an integrated sway control WDH like the 4pt Equal-I-zer.
In fact, looking at the pictures, the Blue Ox looks like the E2 2pt WDH from Progress, but they use a more flexible spring bar, made of spring-steel. The only means of sway control in the SwayPro is whatever friction is created between the bars and the head. The geometry looks no different than the Equalizer, but they have no additional friction control at the rear.
I can see the benefit of the spring-steel bars. They flex a certain amount, and lift a certain amount, such that you don't have to mess with spacer washers to make adjustments. That's nice.
I'm not trying to pooh-pooh the Blue Ox. But it seems billb800 is saying the Equalizer is inferior. Can somebody tell me how the Blue Ox is supposed to be superior to the Equal-I-zer? I don't see it how the Blue Ox would control sway any better than the E2, and certainly not better than the 4pt Equalizer.
thebrakeman ('70), DW ('71), DD ('99), DD ('01), DD ('05)
2004 Surveyor SV261T (UltraLite Bunkhouse Hybrid)
2006 Mercury Mountaineer V8 AWD Premier
Equal-i-zer WDH (10k), Prodigy Brake Controller