Isolation devices- to use 3 or 4 footers?

My DAC only has three points coming out of the bottom for it to stand on, so I have three Isoacoustics Orea Indigo’s under it. My preamp has four feet and is bigger, so I went with four isolators under it.

Anyone here use the brass cones from Live Vibe Audio? OCD Mikey raves about them. He's tried Townshend springs and finds the brass better. He hasn't tried Stacks yet. 

Innuos uses 3 footers. Maybe there is something to it.

I prefer having four feet on my gear that isn't rack mounted. But consider that it's the three-legged stool that never wobbles. It's why photographers use tripods.

More effective, or sounds better?
I find 3 sounds better on my Garrard 401 tables.