(Image credit: Future) With the majority of today's entertainment media available on demand or via streaming services, physical media has taken a back seat, with many traditional DVD and Blu-Ray manufacturers packing up shop. However, there's also been a resurgence in people wanting to actually own the content they purchase, rather than relying on streaming services that may remove their favorite content on a whim. While they are less common now, you can still get plenty of DVD and Blu-Ray writing drives at the moment. Lots of cheaper external drives available from unfamiliar brands are plastered all over Amazon, but if you want a drive with a bit of pedigree, then take a look at these Asus external drives for either DVD or Blu-ray. The Asus Lite Portable USB 2.0 Slim 8X DVD/Burner/Rewriter is now just $27.99 in the Prime Day sales, with Asus' External Blu-Ray 6X Writer marked down to just $149.90 .…