Delta often flies 767-300s to EDI. Those have the oldest and arguably least favorable Delta One setup in the fleet. Depending on what is important to your flying experience, Premium Select might be a better, less costly option.

Typically better on Delta One:
• Food and drink
• Seat does lie flat (most work on 767-300)
• Pillows and blankets
• MQDs

Typically better on Premium Select:
• The price
• Couples seating if one prefers the window
• IFE screen (767-300 only)

I would personally spring for D1 for $500 over the PS price. If it is more expensive than that, it’s difficult to choose D1 over PS on the 763.