These are my favs -
http://www.joann.com/joann/catalog.j...RODID=prd17775
Use a coupon. I always buy them at at least 40% off. I say always as after over a year of regular cutting and cutting hard objects with these, I finally chipped a small piece out of one blade. They still work fine, but sometimes I get ribbon caught there, so I bought a second pair for my ribbon cutting.
I've used the SU paper snips (which are the same as Cutter Bee) and also several pairs of Cutter Bees. They stay sharp for a while, but do lose their edge. The Fiskars ones do not. I bought the Fiskars ones after I got tired of sharpening the Cutter Bees. And, the handle on the Fiskars pair is big and padded, which is great for my big hands as the paper snips hurt my hands when I have to do a lot of cutting. I've also used my Fiskars to cut a variety of things from chipboard to paper to metal. They're still sharp too!