I am quite happy with my DIGISTOR external Blu-ray drive (the actual drive component is Panasonic):

http://www.digistor.com/Optical-Drives/External-Drives

I would also highly recommend DIGISTOR recordable media (which is manufactured by CMC Magnetics - a quality Taiwanese manufacturer, that produces "Made in Taiwan" Verbatim recordable DVD and BD discs):

http://www.digistor.com/Blu-ray-Recordable-Media

The BEST thing about DIGISTOR products is the company. They are based in Campbell, California and stand by their products 110%. Contact them about ANY coasters you may get, they will replace and ship them for FREE.

Receintly, I had intermittent issues burning their BD50 that turned south really bad (7 for 7 coasters trying to burn one folder of data to disc) in Toast 11…they extensively tested and have RESOLVED the issue completely (the problem, as it turned out, was in Toast 11) with ZERO coasters since, for more on that:

http://forums.support.roxio.com/topic/90195-toast-111-build-1072-stalls-at-100-complete-writing-lead-out/

Hope that helps! ;)

-A.S.

p.s. The ACTUAL drive that I purchased is the DIGISTOR™ Personal Archive Blu-ray Burner for PC and Mac (Slot Load) - DIG-78112 and I tend to buy the 50GB BD-R Printable media.