I think the action very much depends on personal taste.For example like I was saying, the actions of the steinways that I play on is light -- very much lighter than the german pianos which are very good as well.It's also rumoured that Horowitz wanted the action of this piano to be extremely light, arguing that the action of the pianos now are days where much heavier than in the classical/baroque periods. This may also have something to do with his flat finger technique. That may have been why he had to bring his piano + technician wherever he gave a performance.