For me, the biggest issue I've seen with DVD writers over the past few years has been the life of the DVD writer itself. I don't really care about speed or noise. I've had a couple of failures of barely-used NEC and Lite-On DVD drives, so I won't buy any more of those. So, nowadays, I'm mostly buying Samsung and LG drives.
Like hard drives, though, it's hard to know what's really reliable unless you sell hundreds of them. None of them are as bad as some of the cheap CD-RW drives from the mid-90s (Edit: late-90s). Many of those would only last a month or two.