Herbie's Grungebuster 2 CD Mat vs Marigo's 3-D Sig

Has anyone compared the Herbie's Grungebuster 2 CD Mat (the little green things that go in the middle of the CD and which retail for $7.95) with Marigo's 3-D Signature Stabilizer CD Mat (the gold one that retails for $199.00)? If the two are roughly equal in performance, then I think I may know which one to buy.....

I owned one of Herbies. Never had the other. Herbies made a significant improvement. Only prob I had with it was because of its small size, it either stuck to a cd that I put away or fell off into the player. Either way, I LOST it! (I think I'll buy another one though).
Never used the Herbie but have the signature Marigo and have used the standard. Put it this way, I do not listen to cds without it. Best way I can describe it is more detailed but smooth. If you can't afford the signature the std is a huge imporvement from using nothing.
Hmmmm, so far it sounds like thumbs up to both products. Tarsando and Rello: Thanks for the info.

I haven't used either the Grungebuster 2 or the Signature Marigo Mat, but I have used both Shinola and Auric Illuminator 2. This topic is confusing to me, and these CD treatment products seem surprisingly difficult to evaluate.

Anybody else have impressions?
This is what I use with my CEC transport and it works better than all the other gadgets I tried :

A Herbies Grungebuster SP (self adhesive) CD Mat adhered to the bottom side of the puck.

Also, a Van Art Speak "De Mat" is placed on the CD itself before playing.

Note: If you have a drawer-type front loader, I would suggest using one of these products, not both at the same time, also read the link about the De Mat at Globe Audio Marketing Inc. they explain its usage and applications quite well.

See what works best for you and your equipment, I only did this because I came up with the idea of combining the two together for extra mass and coupling and got lucky.

The De Mat is a flexible rubber, carbon fiber embedded composite that has a small "lip" on the outer edge to help aid in self-centering itself (covers the edge of the CD)
You can order these from Upscale Audio or Globe Audio Marketing Inc.

I get way better dynamics, separation, smoothness and detail with these in place, your mileage may vary.

The problem I found is that CDs are NOT cut to the same outer diameter, which is a pain in the butt, because if the CD is slightly larger, the De Mat will not lay flat on the disc.

I would like to find a safe way to slightly trim or sand the outside edge of the CD, so they are uniform to one another in circumference.

AudioDesk will true a disc (sound great when you do it) but, I have never had a problem with the Marigo laying flat . In fact sometimes it takes some doing to separate from the disc
Interesting information. Rx8man and Rello, thanks for taking the time to reply