I've had mine for about two months now...the graphics are just about everything you could ask for, and the new features allowing stopping of movements, passing red signals, hand throws etc, give you a lot more options, and the versatility allows for more accurate representation of the territory simulated....compare, say, the 1920's Rutland simulations to the modern-day BNSF simulations, or the BC Rail model.
One "non sequitur" --- the option allowing operation for more than one day is rarely encountered...only simulation I've implemented it successfully for is the CSX Brunswick-Pittsburgh territory....it did NOT work on the Lackawanna 1958 Scranton-Dover territory which, I was given to understand, is the most developed of the offerings.
But just stay at the drawing board, Mr. Hamley....you have a very-pleased would-be-DS here. Ill be putting in an order for Track Builder just as soon as the finances allow it.