I prefer the port side going south and the other side when returning home. Don't we use the terms, port and starboard on aircraft? If one sits on the right side of an airplane one cannot see the many impressive mountain peaks.
View of Mt St Helens from a 2009 trip to Portland, OR.
The seat pickings are a little slim in economy nowadays. I made sure we weren't positioned over a wing though. On clear days the mountains can be beautiful.
On recent trips to PV we've flown through Phoenix. As we're doing LAX on Delta Airlines, I guess we won't have any views of the Grand Canyon this December.