I hear you, focus13st - your questions are indeed among the ones that prospective BBK purchasers should weigh for themselves.Wilwoods are fully Rebuildable, with easy one minute pad changes also, I'm not saying rears are required, but bang for your buck wise why not cover all 4 corners for the same price with a kit that on this platform will perform just as well.. To much money up front and I think the bias of the car will be thrown off.. Wilwoods are also a 6 piston front caliper, stainless steel lines all that good stuff.. Not saying the Essex isn't good but I don't see it performing THAT much better then the wilwood setup to command the price it does
I know Essex carefully addressed front/rear balance in their system design. And without C&D, MT, Grassroots Motorsports, or R&T doing an instrumented test, we may never know what the objective performance differences are between ours (and other) systems.
Perhaps someone will read this and put together a BBK shoot-out. Now THAT would be cool!
The real take-away here is that at least we ST owners have many affordable aftermarket braking system choices thanks to vendors who have developed systems for this platform. From a simple pad change or rotor replacement all the way up to BBKs.