Well, now I don't know if my next tower model PC will be a Dell anymore.
Dell has removed the full height 5 inch bays from the latest iteration of their XPS tower model PC's. It comes with 1 half height bay for a half height DVD burner. As far as I know, they don't even make half height BD burners and that's what I need. Even if they did make them, slim model external BD drives are junk, so I can't see internal half height drives being of any quality. So, I'd have to get an enclosure and buy full height drives for external use only. Plus, I preferred having 2 5 inch height bays in the Dell towers I've had before. I liked having 2 internal drives because I had some old DVD-9 images that were split across 2 DVD-5's. With only one drive, internal or external, I'd have to copy the parts from each disc to HD and create a new .DVD that way. I don't think I have too many more of these split images left anyway, but it was easier having 2 internal drives for this process.
And I need BD drives. I've moved to BD for a lot of my dual layer DVD-9 needs. No more layer changes to worry about failing.
So to Dell!