I was to ticked when my last wired 550 went bad. The Max Ergo just feels cheaper. I guess when it breaks, I'll try this. I really wish someone else did a thu

I was to ticked when my last wired 550 went bad. The Max Ergo just feels cheaper. I guess when it breaks, I'll try this. I really wish someone else did a thumb trackball. The center ones don't work for me.