Four airlines serve this corridor with genuinely different products. Delta's Delta One Suite is the standout if you want privacy — a sliding door, 1-2-1 configuration, and a Tumi amenity kit that's a step above the usual toiletry bag. United's Polaris cabin uses the same 1-2-1 lie-flat pod layout with Saks Fifth Avenue bedding and Polaris lounge access at connecting hubs, a real perk if your itinerary routes through Newark or Chicago with a few hours to kill. American's Flagship Business gives you a lie-flat suite, Casper bedding, and Flagship Lounge access — American's ground experience at its hubs has improved noticeably in the last couple of years. SAS Business, meanwhile, brings Nordic minimalism and a sustainable dining program to the same 1-2-1 layout; it's a solid choice if your routing naturally connects through Scandinavia and you want something quieter and less flashy than the American carriers.