I think the Overland/Simmer's sky package is your best bet. It's payware though but the models are excellent and there are several high quality repaints on avsim by Tom Collins. The Boeing package includes the 777-200, 777-200ER, 777-200LR, 777-300, 777-300ER, 737NG, 767-300ER, 747-400ER, and the MD
-11. Keep in mind that none of these models have a fully functional FMC. However, PSS
makes a 777-200LR with a fully functional FMC, but it has a crappy model.