Originally Posted by
fourfa
I have a 2014 Vaya with discs and QR F&R, and I speak from personal experience when I say I loathe QR and disc. The steel fork on that bike flexes and causes brake rub in most corners. Also it winds up and judders under hard braking. Would an equivalent thru-axle steel fork rub less - yes. Would a rotationally-stiffer QR carbon fork rub less - yes. Would a stiffer carbon TA fork rub - probably not ever.
Do note that I'm 200+ lbs, and most of my riding on that bike was with 50+ lbs of gear. If I take off the luggage and lose 50 lbs, no problem LOL
No problem with brake rub or "judder" with my steel fork 2017 Vaya (59.5cm). I don't ride with 50lbs of gear, but I am 225lbs. I assume you ruled out the common causes of this.
I've only experienced judder with a cantilever bike, but I didn't have the threaded headset snug enough.