In my opinion the Logitech G700s is a complete success. They have taken an ex-user with a lot to hold a grudge against about wireless mice, and opened my eyes and made me realize that they have come a very long way since the last time I used one. Lag? Depending on the advanced power setting you have chosen to use, there is none in the "Max Gaming" mode. The mouse stays active as long as the switch on the bottom of the mouse is on. With a countdown warning system that shows you that you are about to lose the mouse when the light goes red at 25% battery life, it is very easy between the next round to grab the cable and plug it in to charge. This also fixes my other issue where you had to either use a base to charge, or if you forgot to charge the second battery, your gaming was done for a few hours. With the way that Logitech uses the charging cable to also transmit data to the PC, you can plug in to charge and keep gaming endlessly.
Then of course there is the style of the mouse, and I find it to fit my lazy way of moving a mouse with the palm of my hand resting on the desktop very well. In this manor, I was able to use all of the buttons easily, where a claw grip or something in between will make you have to really contort your thumb to use the four side buttons.
I do want to also discuss the battery life. When I first got the mouse I tried to use the G700s as much as possible, but the thing is I still got six days out of the Power Saver mode, four days out of the Normal Gaming mode, and two entire days of gaming with it in the Max Gaming mode. Of course your times may vary with the amount of usage you can put into it, but I was gaming four to five hours a day on top of photo editing and usual web browsing to get my time limits. Something else to consider is that in Power Saver mode, there is some lag if you want to call it that, but only initially. This is due to the software "shutting down" the mouse and allowing it to sleep while not in use, even if the switch is on. So the first time you use it you have to jiggle it to wake it up, and after a bit of time, it will go back to sleep via the software. When I went into Normal Gaming, I never ran into lag, and the timer is much longer until there is any sort of power saving going on. No matter how you look at it, it did use about 33% more power in this mode. Max Gaming will leave the mouse functional at any moment as long as the power switch under the mouse is on. So even while you sleep, the mouse will drain all the time, and that takes a huge toll on its battery life.
Functionally, I really like the mouse. The G700s does have quite a few buttons, but they are placed well, and also aren't easy to hit on accident. With taller edges on the buttons, and the need to a fair amount of pressure to activate them, you won't accidentally go a page back on the browser or change the DPI, if you are lifting the mouse or moving it around wildly. I like the grip on the sides from the heavily textured plastic, and the combination of gunmetal grey and black is something anyone will like. What puts it over the top to me aesthetically is the large white G on the heel contrasting against all the thin black lines, and it matches my G710+ keyboard so well with the white accents applied around the G keys.
Getting past the looks and functionality, there are only two things left to consider. One of them is the software package, and here Logitech has done very well to present everything up front to the user, and make reprogramming the buttons and adjusting the profiles to that users needs. There isn't a bunch of layers to it, it is all right there and easy to find what you want to change.
The second and likely most important factor is the price. I for one have seen many mice asking near $100, and I can say OLEDs, fancy lighting, cords, none of it has anything on the G700s. Logitech has really packaged up quite the complete offering, and it is something that even the toughest and most hardened gamers would be hard pressed to find fault with when this mouse is configured correctly. That being said, for us more average users who don't depend on a mouse for a paycheck, the G700s is a real no-brainer, and I strongly suggest you get one of your own, because this one is replacing my Level 10M as my go to mouse on my main computer.