Thanks for the details. So what about using programs like Final Burner or Deep Burner or Roxio for burning session DVD's like for photography. Are they all using Packet-Writing for session DVD's? I've at least learned over time that I do not like a combined CD/DVD RW Drive. I'd like them separate next time. Each time I want to burn a CD, I have to right click on my drive and enable CD Burning on this drive by dragging and dropping, or disable it to burn DVDs. I believe that when I disable the "Allow CD Burning on this Drive", I can no longer drag & drop or even burn CD's... it only recognizes it as a DVD Drive.
I guess as cheap as the pen drives etc are, as you mentioned, it would be a great way to store things instead of DVDs/CDs. Just not as cheap as discs.