I just use these <a href="http:&#x2F;&#x2F;i.imgur.com&#x2F;sghAbky.jpg" rel="nofollow">http:&#x2F;&#x2F;i.imgur.com&#x2F;sghAbky.jpg</a> (MS Ergo 4000) everywhere, they are sufficiently well built for the price point that I have one at home, one at the office and a spare in the closet in case either breaks.<p>with the wrist lift on the front they allow an entirely natural posture which I&#x27;ve found a big benefit, especially as I have a back condition so a relaxed neutral position is a big win.<p>It&#x27;s a shame they seem to be replacing them in favour of a moderner version with chiclet style keys.