For those who own, or have viewed, any of the nineteen previous Spectrum collections this newest volume follows the same format and includes a number of the same artists. If "Fantastic" art is to your liking this newest offering should be a welcome addition to your library. There is something here for everybody. Which, of course, means that a fair number of the entries will be of marginal interest but will be compensated by a few others that will just knock your socks off.I have collected the Spectrum series from the first volume and they are always something to look forward to. The editors consistently present the very best artists in the field and there is not one edition I haven't enjoyed looking through over and over again.It is interesting to contrast the works in the earlier volumes and see just how far the quality of the art has progressed. I enjoy the early editions but there is no question, at least in my judgement, that todays artists have really ratcheted it up a few notches. The work in the later Spectrum series volumes is much more polished and, seen in its entirety, much more diverse.There seems to be some controversy regarding the mediums employed in the production of these works (the digital vs traditional debate). I am not in a position to weigh in with any meaningful commentary as I am not an artist myself. I will not likely be owning any of the originals from these artists, whatever the format, so I just relax in a nice comfortable chair and enjoy them for the pleasure and creativity they do offer. I know I couldn't produce anything nearly as impressive with a brush, pencil, pen, keyboard or mouse so a big hat-tip to those of your that can.Will be pre-ordering #21 as soon as Amazon has it listed - Thanks