I own plenty of higher/mid end winter clothing from assos, castelli, Santini, gore, etc. and mid/lower end but quality stuff from PI, dhb, sugoi, showers pass.

There isn’t a huge difference between the quality lower stuff and higher end stuff in my opinion. The only minor difference is in the fit. The high end stuff basically just feels more sized down and as a racer I like the snug yet warm feeling it gives me. The cuffs and finishes also tend to be a little better designed e.g. flat tapered armholes that easily fit under gloves.

Water repellency I find is a gimmick. Just buy water repellent spray from REI meant for tents - Spray away!!!