Adaptec (Roxio) CD creator 5 can format both cdr and cdrw discs to udf format with compression. That way it will store alot more than just the 700mb of space that fits on aregular disc. Personally, if i could afford it i would go with only cd-rw because on the contrary to popular belief they have a life-span of 10 or more years. that is with the gold embedded records ofcourse... (no cd can last more then 10yrs without a loss of data so if i where you i would try to store them on vinyl or internet harddiscs since they are easily updated with no data loss.)