Huge difference in sound : Spikes vs. Vibrapods

Although my English will never be perfect, I know I can do better.
Since a few days I have an issue with my wireless keyboard. Sometimes I will press a certain key and it will write a different letter than it is supposed to write.
So I will have to get a new keyboard soon and take more time to go over my posts again.

Tek thank you for posting this experience. My speakers are extremely dynamic, & that "gut-punching bass" is something that I'm so used to that when I hear a rig lacking those dynamics I really miss the effect; it seems to have so little PRaT.
My floor is tile on concrete, similar to yours. When I spiked my speakers I was very pleased with the result. However I also have a good assortment of Vibrapods & have wanted to try some #5's under my speakers, so thanks for the motivation! The fact that it was very difficult to perfectly align those spikes under my 125 pound speakers & then get them back into the correct placement has certainly dissuaded me from further experimentation, but it's something that I know I definitely need to try out, for curiousity's sake if nothing else.
When you hear a live band then those dynamics are obvious; this is many times what is lacking in a reproduced playback. Trust your ears above ANY measurements - go for what you like the best, it's that simple.

TEK:
Your English skills are better than many natives....I own Martin Logan SL-3's and experimented with Vibrapods and DH Labs ceramic cones (jumbo)with their pads....I got a tighter, cleaner bass response with the cones...what I liked best....my speakers sit on a wood floor attached over poured concrete.
Your posts are great....keep them coning.

Cones are the way to go IF you want to develope a more neutral sound in your system.

I have done many experiments in this area. Most people have been so conditioned to believe speakers must be spiked that
they dismiss outright any suggestion of using vibrapods or
bearings devices even though they have never actually tried them.

When using vibrapods under speakers you can simplify things
by getting 20x16 or larger glass cutting boards and then set vibrapods/speakers on top, and you can easily slide speaker on carpet/wood floor. Also 1" nylon dog leash makes good strap to loop under large heavy speakers so 1 person can lift/move.

Once you have speaker on vibrapods you will easily hear deeper more detailed bass lower midrange, however with some speakers/music it can be too much bass emphasis and not sound natural, this is mainly with bass heavy rock music.
I really like vibrapods with classical music as it brings out bass details on viols, bassons, deep horns etc. When speakers are on spikes there is shift to upper mids and treble and bass becomes tighter/leaner which may be the sound you prefer. So depending on speakers you have may like the vibrapod effect, you should try this if you feel system is currently bright and needs less treble emphasis and more bass.

The lower mid/bass also becomes more detailed with vibrapods
I feel vs spikes. I especially like using vibrapods with stand mounted monitor speakers that by design are lacking low bass response, really works wonders here.

There is also half way step between vibrapods/spikes and that is with oak blocks (cut from 1/2 x 3 trim boards) you can try. Also since bass is omni directional you can vibrapod one speaker and hear the basic effect.