Originally Posted by robkez313
I had MS ie 3.0, it was good for CS because had no prediction. It double clicks after a year of use and scroll wheel is crap.
Had mx518, it was more smooth then ie 3.0, but had prediction, so not as good for CS. Had it for like 5 years, never break.
Now I bought g400. It is best mouse i have owned.
Was picking between g400 and DA, but choosed g400, because it is cheaper, i am used to the shape of my mx518, and i read some bad reviews about DA fast breaking and double clicking.
I use the same switches in the mice as the G400 - Omron D2FC-F-7N(10M), Although the MX518/DA/IE3.0 use the 5M versions (half the rated lifespan of the 10Ms).
As you've seen, the 5M versions can last for years, but some can fail within a year, even if you treat them exactly the same with regards to how often and forcefully you press them.
One of the reasons is simply because even though a switch is rated to X million clicks, its just a rough guide, the rating process isn't as perfect as, for example, jet engine fins. But this isn't the only reason why some mice switches fail sooner than others.
In the graph below, you can see the overtravel can drastically affect the lifespan of a switch:
The Aurora and Velocity are designed so that they don't allow the switches to be fully pressed, they only go past the operating point as far as necessary. If you press a button on a mouse, then release it, the switch should disengage instantly. If you can move the mouse button up and down (a "mushy" feeling) while the switch is engaged, then it means the shell is pressing down past the operating point further than it needs to, which will lower the lifespan of the switch and make rapid clicking more difficult.
That doesn't mean to say the problem can be avoided 100% though, there are tolerances involved, so that means you can centre on a lower overtravel, but like darts, its hard to hit the bullseye every time, some will stray away, all you can do is improve the odds that it doesn't stray too far. Using a high quality factory also helps, as the tolerances will be lower, due to better materials/machinery/operators.Edited by bst - 10/11/12 at 1:46am