Bought the DVR-215DBK to replace my Samsung 203B which was horrible. I am forever glad I made the switch.
The 215 is of course loud when unbridled, but the sound it makes is much smoother, much more controlled than the Samsung's. It just sounds like more of a quality product. In addition, unlike with the 203B, I haven't had to install any (shitty, Engrish-riddled and bogus) software or update the firmware, as the control is brilliant as-is: the drive spins down nice and fast, there are no extra squeaks or whines like there were with the Samsung and it doesn't want to shred my Battlefield 2142 disc!
It sounds like a tank in a positive sense while writing, and is whisper-quiet with movies. Pioneer is highly recommended by me from here on in, and I hear they're making an improved, damped version right now.
Pioneer 1 - 0 Samsung
My 203B emitted an annoying whine even at low speeds, and I replaced it with a Lite-On 201AL, which is quiet. My 215D is very quiet. However, I ripped a CD with the 215D, and partway through, I heard it slow down, which was not a total surprise, as the CD wasn't in the best condition. Although Easy CD-DA Extractor reported no errors, I'm glad I listened to it, because I heard a couple of glitches corresponding to the slow-down. Consequently, I won't be using the Pioneer to rip any more CDs. My plan is to use the Lite-On to rip everything, and the Pioneer to burn.