It's something I'd like to look into but I can imagine they take while to print so could slow production down if you were doing a large batch job. Not sure about longevity but CDRs don't last long apparently.
I've generally used "Aquaguard" disks. I really like the matt paper like quality you get. It works really well with cardboard sleeves.
I've also used "Taiyo Yuden" nice glossy finish.
