My friend, who is an audio dealer heard these at the show and was hot on them. I heard the YouTube demo and wasn't so sold. In addition, floating a speaker goes against everything I've always heard, sturdy cabinet, sturdy stance, etc. hence spikes. The Iso Acoustic allows the speaker to move with the force of the driver basically giving it a floating effect. So he orders a pair that matches my speaker, brings them over and sets them up for me. There was an immediate difference but my ears were not sure they liked what they heard. The more I listened it was a closed case the sound was annoying me. At first listen it seemed like there was more space and air around things but it dawned on me the stands were simply not fully allowing the woofer to do it's job, the midbass punch was gone, vocals were cooler because the full frequency wasn't there, the overall sound was sort of holow. After removing the stands the sound by comparison seemed more compressed but it was "right" again. When you take away a speakers firm footing it's amazing how wrong it can be, even piano strikes and vibes didn't sound right. I really went into this with an open mind, I liked the fact my speakers would be 5.5" higher and he did go through a lot of trouble. I may be overly sensitive to the effect but I couldn't listen anymore with the stands. If you find the website there's a link to a youtube demo, if you have good speakers or headphones for your computer you should get some sense of what happens.
This is just my take and experience, some may like the effect.