Turntable isolation platform Recommendations?


I currently have a Critical Mass isolation platform on loan. Does anyone have any other suggestions I might look at?  Possibly considering the HRS 

any feedback would be greatly appreciated..

iconicaudio
The best and most economical platform is a diy sandbox with whatever wood you want
just make sure to heat the sand in the oven before installation
Don't know what issue you are trying to resolve but after many tries with my system the one device that solved all the issues were the Solid-Tech feet of silence.  They're fairly economical too at $500 for 4 - at least when I ordered them. Put those babies underneath the feet of your table and be amazed.
Having owned both SRA and Critical Mass platforms nothing beats my Vibraplane.  I still loved my critical mass platforms and used them under my Joule Electa Destiny’s were they served me well.  I have owned the following tables, SME 30/2, kuzma xl4, TW AC3, micro Seiki rx1500fvg and a Transrotor Rondino.  All benefited from the vibraplane now in its 16th year in my system.
I have a Rockport Sirius 11 which weighs 200lbs would Critical Mass be the best platform for it ?
I have a Rockport Sirius 11 which weighs 200lbs would Critical Mass be the best platform for it ?