I have the LG GWW-H20L blu ray burner. It seems fine so far. Here is the review for this burner at cdfreaks: http://www.cdfreaks.com/reviews/LG-GGW-H20L-Blu-ray-Writer-Review/
It can also read HD-DVD, and may be one of the last drives made with that capability if that is a concern.
Faster drives are coming out. Top speed for this drive using BD-R is 6x and I know of one Sony that is 8x, and I believe I read that a Pioneer has already been announced with 8x BD-R speed.