Spike feet protectors

Yes

I tried spiking my speakers to Herbie's gliders (carpet over plywood second floor).  I liked the SQ of spiking directly to the floor rather than the gliders.  You have to try it to find out.   

Yes.

Okay, thanks. Guess that coincides with reviews I have read. My very first high end system...glad to join you veterans in this wonderful audio world!

I use Vibrapods instead of speaker spikes as they uncouple the speaker from the floor, they don’t cost much, and I think this approach makes for much better sound on wood floors than spikes. Some sort of decoupling feet are offered on a lot of pricey speakers these days which is interesting, and proves my point maybe (I've used these on different speakers with good results). Or lack of points...or renders my approach pointless.