Summary: Great mouse for gaming or just getting work done on your pc. Perfect accuracy when wired and still as good as most other gaming mice when wireless. The software is very easy to use and setup for each game you play. Although i would recommend pairing this mouse with a really good mouse pad. To me the sliders on the bottom don't work very well for gaming on a cheap mouse pad.
Summary: I have used this mouse for over 4 years now. and it doesnt show any signs of slowing down or ready to go yet ^^ I love g keys i use them for everything from gaming to Blender program to photoshop. I love the locking mouse wheel. its great for skimming web pages quickly and then lock it to move one space at a time for Gaming purposes. The battery will last me a full day use. I also enjoy the design its the perfect shape for comfort.
Summary: Wireless option is nice. Battery live is decent but it doesn't matter since I have lots of enoloop lying around. The mouse is perfect for palm grip gamer. THE ONLY NEGATIVE IS The cable is too stiff. When you take the battery out and play it on wire, the cable is ALWAYS in the way. I swap the logitech cable with a blackberry micro usb cable and the problem is solved.
Summary: This is probably the most comfortable mouse I have ever used, let alone a great gaming mouse. They programmable G buttons really make games nice and the Logitech software that you download really helps with the usability. You can program them for specific games that you have on the computer and it will remember them for you. It's nice when I can go from my laptop to desktop and it stores my Boarderlands and Gary's Mod modes on it.
Summary: The g500s, what a mouse that was. I loved it at first and gave it a good review, it was great for days but after a week something just didn't click with me and the thumb buttons are slightly too high and forward for where my hand rested. Tried adjusting the weights but with its low/long layout my hand started hurting after a week of use. I would highly recommend this mouse for palm grip users but man am I glad I swapped for a g700s.
Pros: This mouse meets the most important requirement, comfort. After having tried the g602, the g500s and now this g700s I can confirm it works the best for my claw/fingertip grip. The 4 macro buttons on the thumb are within logical reach of where the thumb rests.
Cons: Now I'll explain how the g602 is a pile of crud. It's real easy to look at the reviews out there and see enough positive about the 602, the battery life is a serious draw, I purchased it at a local retail store then returned it the next day. This mouse is a cow, regardless of removing a battery the weight is ridiculous and with its low/wide stance I found it cumbersome to move with my grip; killed my abilities in fps. The thumb rest is the worst, made my wrist hurt in...