Any problems with bothering the neighbors? I notice you're in an apartment. I had a bad experience in the past where a neighbor was hyper sensitive and called the cops on me several times.I recently picked up am old set of Aerius I ESLs and I found them to be a little tipsy with the speakers small footprint and sitting on the stock spikes.
I had some 3/8" thick carbon steel plates laser cut. I have holes in the 4 corners to accept 3/8" socket cap bolts that are sharpened to a point. The speakers themselves sit on some rubber isolation pucks so they don't excite the floor below. View attachment 22479