Shape

The Dark Perk Ergo belongs to the Logitech G403 family of shapes. In particular, the curvature of the sides, hump position and degree to which it slopes down, and how the left side isn't raised as much compared to non-G403 right-handed ergonomic designs all follow the G403 template. However, there are two main distinctions: the front is much narrower on the Dark Perk Ergo, and it is a decent bit smaller overall. The main buttons are still framed by ledges, but the reduction in width makes 1-3-1 grips (where only one finger rests on the right side) more difficult to realize. This item aside, the Dark Perk Ergo can pass for a "smaller G403," though for my grip style at least, the right side is problematic in that the seams where the top and bottom shells meet are fairly sharp, which can be irritating.


As for grip styles, I'd say the Dark Perk Ergo mostly suits palm and claw grip. It is a medium-sized mouse with a fairly pronounced hump, which should make it generally suit medium to large-size hands. For reference, my hands are 19 cm long and 10 cm wide, and I found the Dark Perk Ergo very comfortable in claw grip.

Dimensions

This table includes the dimensions of the be quiet! Dark Perk Ergo and several other ambidextrous mice. "Front height" denotes the distance between the base and main buttons. Measurements with two decimals have been taken with a caliper, while those with one decimal have been taken with a ruler. For a full list of all measurements taken, please refer to this sheet compiled by an esteemed community member.


Below are some comparison shots with each of the measured mice:


Teevolution Terra Pro


Razer DeathAdder V3 Hyperspeed


Mountain Makalu Max