All I know is that my next pair of waders will be zip ones. Fit is more important than brand to me. But I'll probably start with Dryft to support a PNW company. If not them, then maybe look for sale Patagonia or Orvis.
Durability and fit are importantly to me and often these go hand in hand. I like the orvis as the calf and ankle area are a little bigger to allow for layering and fleece pants more easily (which is when I typically wear waders).