Reducing reflections and glare is a wonderful thing. I would also recommend something very inexpensive, and highly effective as well:
http://www.marcospecialties.com/pinball-parts/DGG-01 or the like. I got one from the previous owner when I bought my POTC, and now I can't imagine not using them on any other machine I have. Very effective at keeping the DMD glare off the glass. Of course, not sure how well it would work with a big 24-27 inch monitor they are putting on them nowadays. Either way, enjoy your new machine.