I was going to get a wireless mouse at first, but then started looking into ergonomic mice, and eventually bought this despite the high price tag - mainly because it seemed more important to me to get rid of my problematic RSI, than to have a wireless mouse, and also becuase of the positive reviews. It's brilliant, really nice to use, the tactile feel is amazing, and it's difficult to emphasise the difference that not twisting your arm makes (which is what you do with a normal mouse). It does look a bit big & weird in the photos, but it's a dream to use and well worth the money. It's like holding a cloud. No really, it is!