Summary: Considering that I have read and burned quite possibly several hundred (probably over 1000) dvds and cds with the two burners combined (I have the towers of empty 25, 50, and 100-pack spindle containers to back that up), I think I got pretty decent longevity from them.
Pros: Great at everything it is designed for. I bought two to speed the process of reading from one to burn to the other. Almost no coasters, and those were junky Magnavox brand from Office max (20 of 100 from a 100-pack. I stay with better brands now, no store-brand stuff either.).
Cons: One of these two burners I bought is no longer reliable at burning and has occasional read errors. It makes a high-pitch whining noise when in use. I can hear it even when the old in-wall air conditioner over my desk is active (and that thing is LOUD).
Pros: I bought this mainly for LightScribe functionality, and as a secondary DVD-RW drive. I have used this drive in countless burns using the write feature and the LightScribe feature. The only issues have come from the actual media (discs), not the drive. And it's less picky about media than my prima...