Going on 4 years since the last post here, and over 5 since the first post...
We know of course that Salamanca was the big winner here, but that site turned out to potentially be problematic for me (turned out okay because I was able to charge overnight at the Hampton Inn in Olean). The issue is that when heading back home after visiting family/friends in Wellsville, Olean, our route would take us west on 86 and then south on 219 through Bradford. Salamanca is about 30 minutes (round trip) out of the way past the 219 exit. If I hadn't been able to charge in Olean, this would have been a bit of a bummer at the start of a long trip. Erwin <-> Salamanca is still a big gap (110 miles) so something is needed along that stretch. Hornell, Belmont, or Olean seem like good candidates (Olean doesn't split as well, but it's a more developed area).