The Zyliss works perfectly with my blender, plus it looks much cooler than the Oster cup, and has a leakproof cap (I tested it, it really is leakproof!), AND the coolest handle for easy transport. I am thrilled I paid only $6 for it, but now I know how well it works I would gladly have paid full price for it. I bought two, one in blue and one in orange, and I'll be getting another one as a gift for my brother. I made the quickest, best smoothie with it this morning!
Here are some pics someone else posted on the web:
