Generally speaking, the more modern the aircraft you are flying is, the better your flying experience will be. This is particularly true when it comes to flights operated by Airbus A380, Airbus A350, Boeing 747-8I and Boeing 787 Aircraft.
The folks at AirlineRoute.net have put together an awesome compilation of all routes currently operated or scheduled to be operated by the aforementioned aircraft. The list is divided by airline, which makes it even easier to read. They even mention the date when specific routes are schedule to begin operation when that has still not happened.
It is safe to say that this list is worth bookmarking and is a great place to start when thinking of booking an aspirational award.