Originally Posted by AxlF16

In general the 777 has better destinations (Europe) and potentially shorter legs. The 787 has a standardized, nice bunk and slightly more comfortable due to lower diff pressure & humidifier. Once you're off the initial freeze it's quick and painless to go back and forth between planes.

Once the 777 fleet is at full capacity we'll have a better idea of the routes/pairing each will fly.