Can I mention my Curt Campbell and Jim Holtz designed, DIY, "Bordeaux"?
They punch at 5X over their weight category.
Aurum Cantus Aero Stricture tweeters.
Accuton 6" ceramic mids.
2 Dayton woofers.
Cost me about $3500 total per pair, and some weekends of labor.
The end results are speakers that sound as good as commercially available speakers that would cost $15K, with no exaggeration.