I'm considering moving from DVD-Rs to Blu-Ray Recordable disks to backup my data. I don't have any experience with BD-Rs as of yet, though, and I wonder if it's worth it or I should wait another year or two.
I clearly remember that when DVDs were still the new thing you could reasonably expect a 20% coaster rate, and after one, maybe two years a lot of successfully recorded disks became totally or partially unreadable. Same thing happened years before with CD-Rs.
Considering that as of January 2012 the price of a single BD-R hovers around $2.40, and considering that I need at least 200 of them to move my data, I'm now treading lightly.
I'd appreciate to hear from someone who made the switch and can speak from experience.
As an aside, the cost per gigabyte of BD-Rs seems to be only slightly higher than DVD-Rs': $0.096 for BD-Rs (25 / $2.40) and ~$0.070 for DVD-Rs (4.3 / $0.3). The higher density of BD-Rs, in my opinion, compensates for the slightly higher price. Still, reliability comes first.