Heres the info I got on the Verbatim disks.
--------------------------------------------------------------------------
Unique Disc Identifier : [DVD+R:MCC-004-000]
--------------------------------------------------------------------------
Disc Type : [DVD+R]
Manufacturer ID : [MCC]
Media Type ID : [004]
Product Revision : [Not Specified]
Disc Application Code : [General Purpose]
Recording Speeds : [2.4x - 4x - 8x - EI2x]
Blank Disc Capacity : [2,295,104 Sectors = 4,482.6 MB = 4.38 GB]
--------------------------------------------------------------------------
[DVD Identifier -
http://DVD.Identifier.CDfreaks.com]
--------------------------------------------------------------------------
Haven't tried burning one yet though.