I noticed that too Gary. I think there are variances in the details of how these different drivers are written-up, but as long as one can still be sure of installing the Series version things should work well. I think it would behoove both Canon and Epson to make the Series driver the default driver in their professional printers. This would avoid a lot of confusion that keeps coming up over and over again. I have heard, however, that this design is not fully under their control - in the case of Apple for example I believe I heard it mentioned that they are facing constraints from Apple computer in respect to how they design this. If so, the several companies involved should cohere on these technical details to make life easier for their customers.