Mac Pro :: Need Input On 3M Document Wedge?

My question is not really pertaining to MP or MBP, but I use both of these computers. I have been on the hunt for the best document holders, I do a lot of looking at the papers and typing it on the computer. After a little bit of research I came across this document holder and it looks cool. Of course, these are a wee bit on the expensive side, but ebay searches came up with these search results: [URL]. Has anybody used these document holders? Even though it is a minor accessory I would love to have your input on this document holder.