If you're looking for an ergonomic PC mouse, you're probably already considering the Logitech MX Master 3S, or the Logitech MX Master 4. I've used both as my main productivity meeces for extended periods of time, and can tell you that either make for excellent picks. But, if they're a little pricey for your liking, ProtoArc has made an ergo mouse with many similar design features for much, much less.
The result is the ProtoArc EM25, a wireless ergonomic mouse that knows what it's about. Right from the off, it screams "budget MX Master" from the nearest rooftop. It's got a similar chassis shape, an extended thumb rest, two scroll wheels (one with a clutch, no less), quiet main switches—the whole kit and kaboodle. The problem is, at every turn, this mouse reminds you of why the Logi mice are brilliant, and why this one doesn't meet the mark.
It's got all the right features on paper, but most of them prove to be a disappointment in practice. It's also got some odd material choices, some strange-feeling mechanisms, and an overall lack of refinement. Dancing around this mouse's various controls over the past few weeks has caused me to pull a vast array of facial expressions, and none of them have been a smile. Almost every control here feels slightly wrong, in a plethora of different ways.
There's a certain solidity to the chassis design that makes the EM25 verge towards consideration—especially given its very reasonable $50/£29 price tag. However, unless you're absolutely desperate for an MX Master-a-like for less, I can think of lots of less-ergo, but much better standard mice for your money.
