I'm sure the squealing ED-209 was for "comic relief."
Horizon's big kit was all vinyl, not resin, Reggie. There was a smaller resin kit from another company, but I can't quite remember who it was...Argonauts? Yeah, I think it was Argonauts. Pretty pricey, as I recall. Over $100 USD back when it was released over a decade ago.
I think the Horizon vinyl kits can still be found from time to time, reasonably priced. E-Bay would be a good place to start.