I have an immersion blender that is at least 10 years old and still working. It really isn't possible to use it in a regular sized soup pot or Dutch oven without spraying. I have to ladle what I want to puree into the narrow plastic container that came with it and puree in small batches. I'm curious about whether newer, stronger, different brand might make a difference or is this nature of the immersion blender. Or maybe it's my technique that is the problem. Thanks.