Thank you... Your reply answered my question very nicely... and even educated me a bit more....

I used the Anyrail computer program to create my layout. This program lists the nomenclature for each piece of track, but I am finding the actual tracks have added numbers at the end. Fir example, the 22" curve is a Hh4403, but I am finding some are H4403A4-1, some are H4403A-2 and so on. Are the all the same? What are the differences?

I used the Anyrail computer program to create my layout. This program lists the nomenclature for each piece of track, but I am finding the actual tracks have added numbers at the end. Fir example, the 22" curve is a Hh4403, but I am finding some are H4403A4-1, some are H4403A-2 and so on. Are the all the same? What are the differences?

Yes, I am doing HO. Thank you Jonathan,  I will use #6 or #8 turnouts. The EM-1 locomotive is the one I want to run on my layout... I just have to buy it now...

I am new at this and am just planning my layout. Which turnouts should I avoid if I am planning to run the large locomotives?