Not very scientific, but I use Image Specialists ink from Precision Colors and just use the built in profiles that canon provides for my printers when printing on the Staples photo supreme double matte paper. Hope you were able to pick up two packages of this paper recently with full rebate! I don't know which Staples store you use in SF, but the Van Ness store was out of this paper the day after the ad was online. I don't think they had received stock in anticipation of the rebate offer. As it was only an in-store rebate offer we will have to wait for the next rebate. Not worth the trip to the store on Noor (in So. SF.) unless I need to be in that area anyway.
Thanks fotofreek, I was able to score one package. It's a very bright paper. I had a color image and I toned it way down and it's still quite bright. Not unpleasant though. I bet I would really lend itself to black & white images.