Isolation will help prevent nuisance vibrations or resonances transfering from room to stand to speaker and vice-versa..."rattling" or "boominess" at certain frequencies.
Spikes make a very strong connection to a wooden floor: vibrations and resonances will transfer more easily. This can help if you have some useful vibrations somewhere that you want to amplify. For example, transfering low frequency enclosure vibration from enclosure to the floor for instance to enhance bass.
In theory damped systems have lower distortion overall - so my preference would be to use those vibrapods; Blu-Tak works great too!
Spikes make a very strong connection to a wooden floor: vibrations and resonances will transfer more easily. This can help if you have some useful vibrations somewhere that you want to amplify. For example, transfering low frequency enclosure vibration from enclosure to the floor for instance to enhance bass.
In theory damped systems have lower distortion overall - so my preference would be to use those vibrapods; Blu-Tak works great too!