Hi icehawk21 (Bryan),
It's just a matter of mechanical stability on your carpet. If the speakers are more stable using the rubber feet, or the spikes, or nothing, then use whichever you prefer.
Without the rubber feet, the footprint of the speaker might make a more obvious impression on the carpet underneath. But there are no sonic benefits that result from spikes over rubber feet over nothing.
Ignore all the hot air promulgated on some forums about resonances and the spikes offering some sort of anti-resonance protection. It's all nonsense that evolved out of British audio magazines decades ago.
