Mine succumbed to the double-click issue.
I really liked the G903. Its heaviness (and optional weights), the ability to change the DPI with the middle buttons, the customisability allowing for adding/removing the side buttons and being able to set them. I found the battery life was good, too. I bought this to replace a G502 HERO that had a faulty mouse wheel, and it did well for a while. Unfortunately I noticed it started double-clicking and got worse to the point in which it wasn't usable (in and outside of gaming). MightyApe were quick to respond and provided a refund — I might pass on Logitech for a while though after several products have now failed on me early on.