For me, Exile is BY FAR my favorite. It’s the classic Halo vehicle map that also has the corridors and sections where you can battle on foot. Those are simply my favorite type of maps as vehicle play is such a huge part of what I love about Halo multiplayer.
I honestly can’t decide, once I’ve played them all I’m guessing that Haven will hold my love
Agreed, Exile. It’s nice to see a BTB map where you can still get around without needing a vehicle. That’s why Highlands is one of my favorite Reach maps.
Depends exile or haven I guess if I had to pick one exile.
I would have to say haven and exile are the ones I’m most impressed with. The other two were kind of “Meh” in my opinion.
Haven, the level is designed to have longer sight lines while remaining a small arena map.
Its also forerunner architecture (my favorite)
Exile is beautiful and full of color, but I’m not a fan of BTB.
Haven’t got to play Adrift yet, but it looks like a ton of winding corners with a medium sized middle. Perfect for swords and shotguns 
Ravine. If not Forge maps, Haven.
Tough to choose between Exile and Longbow… Exile has the better looking layout, but Longbow just looks beautiful(Sidewinder/Avalanche fan, sucker for snow maps). Ultimately I went with Exile though. I love the horseshoe/doughnut shaped map, similar to Sidewinder, and it just looks like it’s going to have some fun matches on it.