Could be Lionel, MTH, 3rd Rail, or anyone other producer.
The reason I am asking to stick to the last 5 years is to give people a fighting chance to find some of these engines. Any color on your choices would be welcome.
Just to get the ball rolling, here are some of my favorites:
1. Lionel Legacy Y6b
2. Lionel Legacy K4
3. Lionel Vision GG1 old rivets
4. Lionel Legacy M1a
5. 3rd Rail Erie Berkshire early
Sorry for the Lionel heavy roster, that is no slight on any other company I just tend to stick with Legacy.
I want to add an engine or two in the next 6 months and you are the people most qualified to make a recommendation and get the acquisitive juices flowing.
Thanks,
Ben