"EXCELLENT for ergonomics!"4.5 starson by suzkstein
Pros: This mouse is THE most comfortable for my wrist. I've only had it a week yet I no longer suffer with wrist pain thanks to this brilliant design. I'm not sure why given what we know about anatomy that it wasn't though of sooner.
Cons: There is only 1 complaint I have about this mouse. It's so tall that when I move my right typing hand over to the mouse I knock it off the pull out tray that my keyboard/mouse reside on. It's a matter of getting used to having a tall mouse I guess!
Summary: I love this mouse not only because it has the DPI toggle switch and programable buttons but MOST of all because it is comfortable for my wrist. I was experiencing serious pain due to tendonitis which is now virtually gone. The minor draw back of getting used to placing my right hand on it without knocking it off the desk will be easy to overcome in a short time. I recommend this mouse for anyone who wants to avoid wrist pain or cure current wrist pain! We purchased it on ebay for $45 new. It was well worth the price.