I want to try and ride the Talgos once before they retire and when planning the trip I noticed that the cascades use a mix of Horizon and Talgo cars. Is there a way I can tell which trip would use a Talgo or horizon before I book? I asked Amtrak and they said there's no guarantee but my best bet is to ride 505. Could I also assume that 500 is also a safe bet? I'm not sure what train becomes what here. Is there anyone who regularly rides the cascade that could have a good idea of how I can get on a Talgo set? Most likely if I go it will be in or after March if that helps.