Just put a pair of juicy5s on the new build. The '06 ones are black, and without that adjustment knob like the juicy7s that I'd probably break.

The HFX brakes I found to be inconsistent with heating, when I tried them on a rental at blue. The temperature affected the engagement point, which I found a little scarey. Maybe they weren't set up right, or being on a rental, were generally screwed. My vintage-2000 hayes mag champagnes are still pretty slick after all these years, with very little maintenance.