The M2 looks cheap, but with a 3,200 DPI sensor and 1,000 Hz polling rate it's actually not a bad deal for $15. The M3 is more the performance I'd expect in a budget mouse, limited to a 2,800 DPI sensor and a 500 Hz polling rate. That's still not terrible, especially for the price, but it means the M3 isn't a straight upgrade over the M2.
It does have a few benefits, though.
The M3 is a seven-button mouse: Left, Right, and Middle click, two thumb buttons, and then the DPI up/down buttons on the top. The buttons are very loud and clicky, even in comparison to the M2, but they do have a more satisfying tactile feel.
There are also five removable weights in the M3's base. It ships at its heaviest, which I actually prefer, but you can pull all the weights out for a featherlight M3 if you want.
The design itself is very experimental, reminiscent of Logitech's G502 or the Mad Catz R.A.T. not so much in terms of form factor but in terms of the weird industrial lines and cutouts that deck the outside.
Those lines and cutouts showcase the M3's hallmark feature though: DPI-specific lighting. Swapping between the four presets (800, 1200, 2000, 2800) causes the LED lighting to change from blue to green to pink to red. It's actually a very pretty effect, though I'm not sure it's enough to sell you on the M3.
It also feels pretty strange under the palm, with weird ridges and pointy edges that aren't entirely pleasant. I definitely don't love the feel as much as the M2, though I once again appreciate the oversized length. Whoever is on the design team for these Enhance devices must have big hands.
As I said, it's not a straight upgrade over the M2 though. And that's a shame because I think the M3 is, by anyone's standards, a much nicer looking device. I wish the company could combine the performance and feel of the M2 with the higher-end look of the M3. Then it would have a true winner.
For fifteen dollars, though? The GX-M2 and M3 are not too bad. My only real concern is the long-term quality. I noticed the pads on the bottom of the M2 were a bit loose and/or starting to peel off, straight out the box. I'm not sure this is a mouse you're going to use for the long haul.
But if you're trying to build a gaming PC on a budget, I think you could get by with one of these until you saved up for your dream mouse. It's certainly better than the generic Logitech mouse/keyboard set I used when I was poor and built my first gaming PC.
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