i usually purchase MOST of my new dvd burner drives from newegg.com; but i did a quick search and THEY DO NOT carry this model as of yet~ the newest one in stock, is STILL, the nec ND-3540A; it should be coming in the near future, the ND-4550A...just be patient~ docTY~
Take a look here: http://www.cdfreaks.com/article/230 I like to think of it as your "do it all drive" I also stand by NEC for Dependency, Quality, and Price!!!
No bitsetting? I just ordered the benq 1640a from newegg.com in their weekend special for $38 including shipping. I just hope it performs just as well as my other 2 benq 1620s. http://www.newegg.com/Product/Product.asp?Item=N82E16827101649 I'll keep a lookout for the 4550. Later