Looking for:
Brooks Cambium (black or natural)
Fizik Antares (black)
Fabric Scoop/Line Shallow or Flat (maybe one of these will work better than the Radius?)
Have:
Fabric Scoop Radius Sport
I realize they might not be commensurate price wise, so I can throw in some $ to even out the trade if it works! Over a few hundred miles, I just couldn't get comfortable on the Scoop Radius that came with my Topstone, but maybe you'll have more luck?