In general, it's identical to DVD media. Or more specifically, to DVD+R DL media --- Use Verbatim, and only Verbatim.
The LTH discs (low-to-high) sub-format Blu-ray recordable discs can vary in quality, based on your BD-R burner. Those discs came later to market, having found a way to be produced with organic dyes and materials similar to DVD. You really need a newer burner (say mid 2010 or later?), and with recent firmware.
The "regular" non-LTH BD-R discs work fine in pretty much any burner. But again, newer burners may be a little better than the earlier generation ones.
As expected, Amazon
seems to have the best prices on Verbatim Blu-ray blank discs:
In USA, you can also look at pricing from Supermediastore.com
. However, as much as I really like those online stores for CD and DVD blank media, I don't find their Blu-ray blank discs prices to be very cheap or competitive, as compared to Amazon
. Maybe on the odd blank Blu-ray sale will you get really low prices for blank BD-R (or BD-RE). To an even lesser degree, Newegg.com
carries some Verbatim BD-R. Gotmedia.com
carries inkjet versions, though at a much higher cost than simple branded BD-R.
That's my advice to you, for buying the best blank BD-R, which will give your the fewest coasters and lowest number of blank Blu-ray burning problems.