Purchased a G603 & G613, both had issues after 12 months. These cost me just short of £200.00.Support had given me a few tips to try to get my hardware to work, after failing that. They sent out two sealed replacements and upgraded my mouse to double the cost of my original purchase all in under 4 days. I'll always shop with logitech due to excellent support. I can only imagine the bad reviews are frustrated customers who don't understand problems take time to resolve, especially when it's a company of this size.
