I must admit that I don't like the Fiskers cutters, Olfa's are OK but I love the Westcott ones, it helps that I can get them so cheap on EBay.
http://www.ebay.co.uk/itm/Lot-Of-6-O...#ht_791wt_1093
Their blades are terrific, they last longer than the Olfa Titanium ones and I do a lot of cutting! They are so comfy to use, for left or right handed users.