Turntable isolation platform Recommendations?

I do not have experience with Critical Mass, but can attest that HRS has an excellent customer service, should you need to modify your platform down the road. I had to get low frequency absorbing feet when I changed furntables and they were super responsive in making sure that I got the right product. 

I've narrowed it down to the Minus K (BM-8, not the low profile model), Stacore Basic and the Vibraplane. There is a favorable lengthy discussion of the Stacore on WBF and Stacore also states that their platforms are truly intended for music (while the Minus K may not?).  Vibraplane is a tested product and although passive, is similar in price to the Minus K (~US$3200). The Stacore Basic (also passive) seems like a better built Vibraplane, but also is higher in price (retail $5k).  I've heard in general that the Minus K may be fussy for optimal performance, but mostly from non-owners - it has the best specs (theoretical) for performance.  Would really like to hear from Minus K owners.

Frankly, I could probably live with either of these three and it's likely going to come down to economics.