To Couple or Decouple?

I've recently purchased a pair of Acoustic Zen Crescendos. I now have them positioned in the room, and I am ready to add the spikes. The floor in my room is a suspended wood type. After researching whether or not to spike speakers or decouple them on a suspended wood floor, the majority seems to recommend not spiking them directly to the wood floor, but decoupling them. So here are my questions:
1). Do I couple or decouple?
2). Anyone use the Boston Audio Tuneblocks S under your spikes? How do you like them?
3). Any recommendations of other decoupling devices to use?
Thanks for you input!
It's a very good question that I really had to think about. I would say decouple first then couple perhaps if all else fails.

That's not to say that coupling might not sound better in some cases but each case of coupling will produce different results. So how can a speaker be designed to couple when every case is different? Therefore decouple to achieve what was intended best. In most cases coupling will result in hearing the room more rather than just the speakers.

I recently added a pair of isoacoustic speaker stands designed to decouple and these have helped make a believer out of me. I then added a pair of auralex sub dude isolation platforms under my ohm speakers in my family room with common suspended plywood flooring and the results in both cases are a revelation.
Symposium will custom make isolation platform not cheap but its the best.