I have a green Alvin. It is what I used to use in college for my art class, but not the one I have right now. My 60mm blade wasn't cutting very well with it, which I thought was strange. So I took it off and revealed my Olfa which I have had for years. Now my blade works great again, but the Olfa smell has returned! It had stopped smelling before, and now it does again. Weird. And stinky! I have the turning Fiskars brand because the were lots cheaper than the olfa and had handier sizes. I like them fine.