Instruction: Generate an answer to the question by utilizing the information contained in the document.

Input:
Question: What's the difference between 4X and 16X disks?
Document: Nevertheless, you will often find websites advertising the gold types as the only true archival quality grade media.I did come up with one very interesting find on a gold/silver disk that might be worth it for very critical information. Mitsubishi-Kagaku recently teamed up and have produced a dual layer gold/silver disk similar the earlier Mitsui disks. They're also over $2 per disk but there's a very interesting difference. It turns out that DVDs are typically stamped from a glass master with runs of usually around 500,000 before they replace the master.
I bought a new 16X burner for my PC and have tried the 25pk Verbatim 4.7GB 16X DVD+R media on it. I have not had any failures so far burning at 16X and the playback has been fine. I have bought another 25pk of this media.
These are top notch. I've always had a good experience with Verbatim discs. No difference this time. I highly recommend them.
These Verbatim blank DVD+R were the first one offered on the market. They have a layer called AZO and they have always been the highest quuality. They have changed there manufacture to what they call &#34;Life Series&#34; to lower there cost. but they do come with lower burning speeds and if you push them to the max they will occasionally skate. The AZO are the best and i suggest that for a few cents more, the AZO are well worth the difference
Let me start by saying that you should check the dates of the reviews on this page, because 10 year old reviews on this product really do not apply. There also seems to be confusion about what +/- means and it's simple, the major difference is that they are not interchangeable when it comes to recording, both will play back in the majority of existing DVD Video players. DVD-R is the earlier standard and may work better for older recorders.I've recorded tens of thousands of DVD's and CD's for business reasons and can tell you that recorders are a much bigger problem than the discs.
These disks have worked well thus far. I have not had a problem with a single disk.
These disks represent a good value. I did not have any read or write errors. So far so good on this purchase.
All of these disks have been great. I have had some other brands where you throw away half of them because they won't record or you can't read them afterward.
These DVD's have worked perfectly for me so far. I've not encountered any bad disks & the recordings have been flawless. This is a good no worries brand.
great product burning my recovery disks now! 2 for 2 so far! i really hope the whole stack will last me haha
Answer: I think it is a different recording speed