I just replaced the left and right click switches in my G502 with Omron D2F-F, it's been doing the double click for at least a year, it only lasted a few months before it started doing it. Disappointed with the quality of Logitech products these days, I also have a G915 TKL, where the keys have started breaking off the stems, they're just so thin and flimsy, and since it's a proprietary design, the replacements are expensive and have the exact same problem.
Anyway, I digress...
I just have one question, that others in this thread with more experience might be able to answer. The switches I ordered from Mouser don't have any indication of the lifetime rating, other than the button color (the only labeling is Omron Japan and D2F-F, no dot), which is gray/beige, which would indicate 10M, even though the OP says not to go by the button color.
My question is, are there different versions of the D2F-F with different lifetime rating, or are they all 10M? On Mouser, it seems like the other variations of the D2F-F just have different pins or are the lever type. Although none of them specify the lifetime rating. 10M just sounds low compared to the blue button "50M" of the switches they replaced, even though that is not legit 50M.
I've only used it for a couple hours after replacing the switches, but I actually prefer the feel of the new switches. That could just be because the old switches were worn. They just feel nicer and more satisfying to press.
I hope they'll last longer than the D2FC Logitech puts in the G502. Opening the thing up was annoying, so many screws, and the stickers covering the screws unavoidably get mangled a little.
It was also a good chance to give the whole thing a deep clean, it needed it.