Yeah, maybe you could try out some old LE175/2410's, LE85/2420's, 2421's or 2425's on these 1" throat waveguides. I probably shouldn't have given you so much grief about them early on; It looks like they are going to be the only things available for all intent and purpose and Pro is happy to sell them. The newest Consumer horns aren't even stocked anymore.
The price on those 2408H's looks pretty reasonable too.