Remove the trays and you can also slot 4.5 gram weights into each side—a nice touch, though it tends to make the mouse a bit heavy in the back (or to one side) instead of the G502's more equal distribution of weight. And even with both weights inserted, the mouse wasn't as heavy as I'd like.
Flip the mouse over and you'll find a hex key you can turn to adjust the height of the palm rest. Used to palm-gripping? You'll probably want to push it a bit higher. Claw gripper? Keep it low so you don't have to bend your fingers quite as much.
The MX780 doesn't quite match the versatility or comfort of the G502, but it's damned close—especially for an ambidextrous mouse. And I think I like the feel of it just a bit more than the Ouroboros.
Pinky goes where?
It's not perfect, though. I've got a few significant complaints with the MX780 that I hope are rectified in G.Skill's next outing.
1) The buttons are loud. The Left and Right buttons are fine, and have a satisfying springiness to them. But the thumb buttons are obnoxious, with an atypically noisy click that still annoys me even after hours of use.
2) The thumb buttons are also flimsy-feeling. Considering I talked up the superior build quality of the MX780, with its machined aluminum, it seems strange that the four thumb switches are so fragile. But they are, with a worrying amount of wiggle and an unpleasant sponginess.
3) And, just to continue on the theme, the “thumb” buttons are poorly placed—meaning whichever pair is not actually under your thumb. They sit too far back for my ring finger but too far forward for my pinky, meaning the second pair is borderline useless. I find myself triggering them accidentally far more often than on purpose.
4) G.Skill's software is bunk. I'm not too surprised, given they're pretty new when it comes to peripherals. Most other companies have had a few years to get their software in order, while G.Skill is starting from scratch.
But the fact remains that it's overly cumbersome to customize the mouse and the lighting isn't especially accurate—a common issue with RGB products, but it's especially noticeable here.
I like the MX780, though. It's not quite as comfortable nor as customizable as the G502, but it arises from a similar design philosophy—one I'm highly supportive of, which lets people tweak a mouse until it's perfect for them.
If you've got the patience to sit and tune the MX780, then there's a great mouse waiting here—especially for lefties disappointed that they're locked out of the G502. Those poor bastards.
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