Under speaker metal SPIKES ...what is the point ?

Following the above thorough reviews regarding the physics of spiking speakers, I'd like to add some more commentary regarding the sonic advantages. I hardly consider myself to be golden-eared, but the changes wrought by spiking my speakers were anything but subtle. The entire spectrum became much more natural sounding, with an especially focused image vs. a previously somewhat blurred image. Staging was also enhanced; wider & deeper. Bass articulation & control was also significantly improved. This much improvement for so little $ spent makes spiking one of the most cost effective tweaks that I've ever undertaken, & I ask myself why it took me so long to do this when it was so easy & inexpensive. But just like upgrade cables & AC cords, I didn't really want to believe it until I tried it. Presently I'm using plated brass cones, but now I'm curious about trying out some different spikes, footers, even pods, in order to determine which ones (or a hybrid mixture of them) will provide the best results.