The differences are as follows:

    DVD-R and DVD+R record data one time only, then the disc is only readable
    DVD-RW, DVD+RW and DVD-RAM allow you to record and erase data multiple times
    DVD-ROM only reads data; you cannot save to this disc

When DVD media technology was first developed, the plus and dash formats used different writing and reading specifications. Today, most DVD writers and readers now work with no noticeable performance differences between plus and dash formats. Check with your manufacturers’ suggestion of DVD format for the best compatibility—especially in older technology.

Recording using a double layer DVD (also referred to as Dual Layer DVD by the +RW alliance) nearly doubles disc storage capacity with two recording layers on a single-sided disc. Verbatim’s parent company, Mitsubishi Kagaku Media (MKM), pioneered this technology—bringing the first double layer DVD media to the market. Verbatim’s DVD+R DL are considered to be one of the best DL media available, featuring almost no compatibility issues, along with quick and flawless burn speeds.

Recordable DVD media is a natural choice for data archiving and backup. Choosing a DVD+R or DVD-R is ideal, as these write once discs prevent contents from being erased or mistakenly replaced. Also, to extend the life of your DVD disc, consider Archival Grade DVDs, which include a gold layer that is naturally resistant to corrosion and offers greater protection than standard silver discs. DVDs are also a great option simple data backup. Using DVD+RW/DVD-RW or DVD+RAM/DVD-RAM re-writable media allows content to be added and edited as the information changes.

• Window enables you to see the contents
• Flap can be tucked in to prevent the CD falling out
• User writable area on the underside for user referencing

Verbatim CD-R/RW uses MKM/Verbatim's technology which ensures any recording to be of a superior quality. Mitsubishi Chemical's R&D combined with its strong coorperation with drive manufacturers ensures the broad compatibility of Verbatim's discs making them ideal for sharing computer data, home videos, photos and music. From Europe's Number 1* for recordable media

Capacity: 700MB,  Speed: 52x
Pack Style: 50 Pack Spindle
Disc Surface: Extra Protection

Verbatim CD-R/RW uses MKM/Verbatim's technology which ensures any recording to be of a superior quality. Mitsubishi Chemical's R&D combined with its strong coorperation with drive manufacturers ensures the broad compatibility of Verbatim's discs making them ideal for sharing computer data, home videos, photos and music. From Europe's Number 1* for recordable media

Capacity: 700MB,  Speed: 52x,  Pack Style: 10 Pack Jewel Case    
Disc Surface: Wide Inkjet Printable,  Print area: 23 – 118mm

Verbatim CD-R/RW uses MKM/Verbatim's technology which ensures any recording to be of a superior quality. Mitsubishi Chemical's R&D combined with its strong coorperation with drive manufacturers ensures the broad compatibility of Verbatim's discs making them ideal for sharing computer data, home videos, photos and music. From Europe's Number 1* for recordable media

Capacity: 700MB,  Speed : 12x
Pack Style: 10 Pack Jewel Case

Disc Surface: Scratch Resistant