...My question is, what do you all use as your "test blade" to see how a razor generally performs?
+1 I find both blades sharp and smooth for my face.Perma-sharp or Nacet
Before I thought a medium blade would be a good idea, but my whiskers need a sharper blade, unfortunately, so now I start with my go-to blade(s).
My go to blade is Astra SP's, it's what I normally use. However, for testing a new razor I almost always reach for German Wilkie's. Not because they are the best, but because they are such an 'average' blade.