First of all it costs much less than comparable drives, it reads HD-DVD in addition to burning blu-ray, and one thing I really like about it is that it has lightscribe built in.
As for compatibility, as had been noted multiple time, the LG drive works in finder and disc copy even with blu-ray disks so we know it is not the drive that does not work with MacOS. The limitation is Toast does not work with the drive but only with blu-ray disks.
BTW, Patrick you mentioned long ago that you were going to install one of these drives in a mac pro to test it with toast. Did you ever do this? If not why not or if so did you confirm that it does not work and no fix is available yet. As for myself I would like to hear, yes it does not work with toast we confirmed it and are working on a solution, rather than hearing nothing from Roxio tech support about the LG blu-rays or tech support just saying it should work without ever testing it. I believe there are enough MacPro users in this and other forums that have confirmed that it indeed does not work and that Toast needs to be fixed to support it.