Now that the KRS simulator is on the verge of having its first release, I look forward to creating objects for it. My experience is with gmax and PaintShopPro in the Trainz environment. Once the content creation utility is available I will try my hand at creating things using Amabilis.

Based on what I've seen thus far of RailSim, it appears to hold promise for a much better experience than any of the other train simulators currently on the market.