Joe,
I have a Legacy B6 from Lionel’s first release and I have to say it is my favorite Legacy engine that I own. It does everything you could want in a switcher. Great smoke, great whistle (Hooter will loosen your teeth), Legacy control it will run at speed step one all day and never stall. The engine sounds are also outstanding. I don’t think you will be disappointed no matter what classification lights they use.
Good luck with your engine when it comes in.
JohnB