My two votes settle for green or blue.

Personally, I like green because we get to see Chicago, which is were the original Eastern Chapter of BoS crash. However this also is the area of the game Fallout: Tactics and Brotherhood of Steel (iirc) both games I don't personally consider Fallout canon because they just throw everything upside down (Much like Fallout 3, but it wasn't so... poorly done imo).

We also get to interact with Pup's Pitt and New New York, which would be VERY interesting for my own character development, as Joshua comes from the Pitt, but knows nothing about it beyond a few wild rumors.

Blue, for me personally is my <3, because it just so happens to track though areas I know, and places I've made Fallout lore for.

I made some Fallout lore centered around Iowa, which, like much of the Midwest, is spared from total nuclear devastation, but suffers from dust storms for many decades after. However following that, the area has rainfall, though it isn't much, it allows for more bountiful crop yields than most places in the US currently. A Kingdom of Iowa has claimed a good portion of Southeastern Iowa, and in my lore was fighting an ever larger series of battles with the native residents mutants of Omaha. There was also a solid Brotherhood of Steel presence, which was at a very, very uneasy peace with the KoI. I also had some silly Nazi slavers for fun thrown around.

It also passes though Missouri, which I know the general terrain (It fucking sucks balls), plus I know the cities of Cincinnati. However it passes though the cool places like Pitt and New York.

I'm torn D: