I’d have to imagine rubber feet produce a different sound than spikes and each has their uses, and then there’s always personal taste. I always thought these Gliders from Herbie’s were a neat alternative to spikes as they allow for easy movement and also provide some meaningful isolation, and users give them high marks for both convenience and sonic improvements. That they’re relatively cheap is an added bonus.
https://herbiesaudiolab.com/products/threaded-stud-glider
