There are only 2 kinds of pads made for the 2008-2012 Can-Am Spyder. Organic and Semi-Sintered. The 2013-14 Spyders have additional brake pad compound options.
The original Spyders came with Semi-Metallic pads but I don't think you can find these anymore.
The original Semi-Metallic pads stopped the best but were crazy noisy. So BRP came out with Organic pads. Organic pads resolve the noise issue at the expense of stopping power and longevity. Organic pads are made with a mixture of fibers , usually including Kevlar. I've seen adds on eBay touting 'Kevlar' brake pads. People are led to believe they are getting something special when in reality, it's nothing different at all.
Here is a good article on brake pads.
http://auto.howstuffworks.com/auto-parts/brakes/brake-parts/brake-pads1.htm
EBC makes both an Organic and a Semi-Sintered pad for the 2008-2012 Spyder. I don't bother with the Organic pads. They are inexpensive but they don't work any better than the OEM BRP pads. I do carry the Semi-Sintered version because they come pretty close to stopping as well as the original Semi-Metallic but without all the noise.