I guess I figured with Railsounds I was limited to Lionel's TMCC. I'm sure I will be getting the ERR cruise commander kits unless I can convince a certain buddy of yours to part with some EOB units. The only other sound options I found other than what I listed were an articulated sound board and SP Daylight, which I'm sure is because of the air horn. The options really seem pretty limited.
I was only posting here because several of you have knowledge of the actual prototypes and I wanted that over electronic advice. I toyed with both and didn't want to double post. I don't know if I have ever heard the Generic steam or the Atlantic sounds before so I was just wondering if one of those were more appropriate for the chuffing on the Hudson or Pacific. I already know that the whistles will be less than prototypical. Hopefully some day that will change.
My exposure to MTH is very limited, but I have heard they have many sound options. I'm just too deep into TMCC to change now.
Thanks!