Vibraplane vs. Minus k for Turntables

I am using the Promethean Base. 100% effective. Brings the resonant frequency to below 2 HZ which is more than enough. You wont' easily hear a difference w more. Last of all, it is much less expensive than either.

Negatives, not a convenient to use as it wobbles (that is why it works) and it is DIY job.

All are a must I depends on you. Go after the Promethean 1st and use it elsewhere if you want to try something else.

100% effective means that it prevents any footfalls, subwoofer feedback from effecting the sound. In the past my subwoofer - which is close to the turntable (6 feet) would cause the turntable to skip. This is on concrete floor. Also if I jumped or touched the rack below the turntable you could hear it. Once I added the Promethean jumping, hitting my rack, playing the same tracks which caused feedback etc were all eliminated. Is it perfect? I don't know. Just worth the little it costs. I am sure the Minus K is more ergonomic and probably even better. Is it worth more money (in my case about 5K for my table due to the weight etc.) is a difficult call. I have eliminated tonearm resonances and improved over definition with the addition of the Promethean. Everyone who has come over hears the upgrade instantly. It is as if I can hear all that my cartridge can do for the 1st time. I wanted the Minus K originally but the price increase to accomodate my turntable was just too high for me.