I have about 250 of them under my O gauge tubular track. I also have about 300 of the Moondog ties that are no longer made. The Moondog ties seem to make it a little quieter, but the noise difference between the two is hard to notice. The ties in the link are hollow underneath and the simulated tie plates do hold them in position under the rails. The Moondog ties did not have this feature and will move out of position. I have a sub roadbed of felt insulation and 4 of these ties between each metal tie. They do a good job IMO.