This set? http://www.lionel.com/products...ght-loco-773-6-31739
I have the '50 & '64 773s plus the 773 with Command from this set.
If you run your trains in Command and don't have a particular nostalgia for 1950 or 1964, then I'd recommend the modern, Command 773.
You can't go wrong with any of them. Beautiful Lionel history!