Verbatim M DISC BD-R 25GB 4X with Branded Surface Blank Blu-Ray Recordable Media – 25pk Spindle,Blue

I bought Verbatim M-disc for the first time to back up my extracted movie Blu-ray ISO. I was worried that it would fail when burning the disc after reading reviews online, but with the right software and a good burner, this disc is very reliable.I bought 25 spindles of 25GB SL discs, and 25 out of 25 discs were burned normally without any errors! Wow!The quality of Verbatim BD-R is undoubtedly good... but the price of M-disc Blu-ray seems a bit too expensive IMO.In the old days of DVD, organic dyes were used, so M-Disc had the advantage of using inorganic dyes to enhance the durability of preservation, but most Blu-ray discs, except for LTH discs, are manufactured using the HTL method that uses inorganic dyes same as M-Disc. Unlike DVD, the M-Disc BD-R discs doesn't require any specific burner and fully compatible with normal bluray recorder. Base on these facts, I don't think the difference between the M-Disc bluray and "normal" HTL bluray discs is big in terms of durability.The price of 25 M-Discs BD 25GB is $65. On the other hand, the price of 25 25GB HTL "Inorganic Dye" BDs manufactured by the same company is $23, while Amazon Japan sells 50 discs for the same price!If there is not much difference between M-Disc and regular HTL, there is no reason for Verbatim to maintain the production line for this disc after Millineta, the creator of this format, went bankrupt, but even considering that, I think the price difference between the two is too much.Of course, I think the quality of the Verbatim discs themselves has been proven this time, so I plan to buy Verbatim Blu-rays again next time (in fact, as of the time of writing this review, the Verbatim discs I ordered from Amazon Japan are already on their way!)Maybe in a few years, I will write a second review of M-Disc and advise you not to repeat the same "mistake" I made just now. Who knows? Only time will tell.For those who want detailed information...The software I used to burn my disc is ImgBurn and I burnt all my discs with 4x speed.All the discs I burnt are verified after the writing is finished.The disc burner I used is LG WH16NS40 with external enclosure (Vantec NST-536S3-BK)I also attach photos of the discs before and after recording.

Still works even if you use a flat head screw driver and use the corner pointy edge and shred the disk, I tested it on one to see how strong these things are so I can have proof that they truly are legit and sure enough they are :). Every single disk has been error free and flawless btw.

I like the fact that "M-Disc" is printed on the inner part of the white surface.This way I have confidence they really are M-Disc. I like the ones that have the white surface because I can run them through my Epson printer. Never use a label on a disc. These are excellent for long-term storage. If you burn something that is not M-Disc, view it as a temporary.

These disks are the only reliable long-term storage I am aware of. I can't figure out why they're not more popular.

I've always been concerned about exactly HOW LONG data could be stored over the years. Mag tape definitely isn't it, nor is data stored on SSD drives, etc., nor 'paper'....really! Come on! Not likely.Well, if you maintain a CD drive that can record & playback these 100Gb disks then THIS might just be what you are searching for. I finally did get one that seems to work well, after an earlier failure, and am in the process of testing it out. It seems to work well, with only a couple of minor hesitations during playback, but I think that's not an error, just the fact that it's mechanical and probably subject to such things occasionally with very large files-- I'm continuing testing and proving to myself how reliable it will be. The lifetime prospect (storage) for this type of media is way better than what I used before, despite the slower record time and greater cost. Something to work out later, I suppose.OK -- this 'later', and I got some blank BDXL Verbatim disks.....I experimented on the 1st one and was VERY happy with the quality, however the 'but' part of the testing is a 2-parter......Number 1 is the COST per disk is high, and since I'm sure you can't re-record over, you better not waste it.....the 2nd one is a killer, and it was SO slow recording you almost have to start the copy when you go to bed, because by the time it's done (91 Giga bytes writable space) it'll be next morning anyway. Probably minimum of 5-7 hours per disk. However, IF it works out to be the 'longest' storage capability, then so be it. It STILL works good.

Packaging was a bubblewrap envelope. Totally inadequate protection. Jewel cases were cracked. Discs were ok. *Any* optical media in jewel cases *must* be packed in a rigid box to protect from crushing damage.