* Prices may differ from that shown
I bought this mouse when my old Razer Deathadder's (a great mouse) button 2 stopped working. I had used Razer for a while but a few people seemed to recommend the logitech, so I thought I would try it out.
I do a fair amount of gaming, although I would never call myself 'hardcore', so I wanted a decent mouse, but not one packed full of 25 thumb buttons and the size of a Fiat 500. On these grounds the Logitech is what I was after. I guess that the comfort and hold of a mouse is a fairly personal opinion, so this review is based on my personal opinions.
First of all, this is a corded mouse, which may put some people off, but for me, there is nothing more annoying than your mouse running out of juice whilst you are using it.
It is a medium sized mouse, and should fit most hands. I hate small mice, as they hurt my unsupported hand, and I find large mice ungainly. The palm of my hand fits comfortably on the back of the mouse. The sides are rubberised black plastic, which give a good grip, and the top and buttons are a matt grey/black, so it will probably fit in with most black colour scheme pc's these days. Otherwise the design is decidedly low-key next to Razers bling and pulsing blue lights, but to be honest I kind of prefer that. My girlfriend always thought my Razer was a bit too OTT geekish and 'bling-y'.
As far as comfort goes, there is a rather annoying ridge on the right hand side grip, which your fingers rest on. This felt a bit weird when I first got it, but I got used to it. Apart from that, the rubber gripping means it doesn't slip, and hides fingerprint marks well.
The G400 technically has 8 buttons but two are for 'on-the-fly' DPI changes, this means you can change from 400dpi to 3600, essentially this slows down, or speeds up the mouse movement. Non-gamers, or specifically non First Person Shooter gamers will probably not care much about this, and as I am not really 1 FP shooter fan, I cant say I use it much at all. I have tested them, and the DPI changes are quick and responsive. The 8th is for customising the setup of the buttons depending on the game you are playing, this uses the software bundled in the box, but I have never actually used this. Go pop some head-shots FP'ers!
Next you have the standard L (1) and R buttons (2), with a clickable central wheel acting as button 3. These top three buttons feel solid, and are responsive, with a decent but light click to them, so you know you have pressed them. The L & R buttons shape tapers in a bit near the front, which I initially didn't like, as my old mouse kind of flared out at the end. Now, however, it feels natural. The scroll action of the wheel feels smooth with just enough resistance, and doesn't feel too clunky.
This is a right handed mouse, so on the left side are the two remaining buttons 4 & 5. Personally I find these slightly out of position, but again they are solid, and are very responsive.
I have a 'hard' style of mouse mat, as I hate the feel of soft material mats, but I have used it on both, and it glides about flawlessly. It has five smooth pads on its base, which I believe you can buy spares of if you require.
I got my mouse from Amazon, and currently, its £24.99 there, which is cheap for a gaming mouse. It is available from plenty other sources online and in computers store, since Logitech are a very big brand these days.
Overall, I have mixed feelings about this mouse. I can't fault the build quality, all the button work well and
the design, although subtle, is attractive (as far as mice go anyway). My problem is that I loved the feel of my old Razer mouse so much, so I find the hold of this one slightly awkward. Even my girlfriend who only uses the pc for boring stuff (you know, work, and typing up essays) preferred the 'bling-y' Razer for its grip. I have got used to this one, and I sure if I had it first I wouldn't have any issues. I can certainly recommend it though, since as I said at the start of this review, the comfort of a mouse is a personal thing, so it might feel perfect for you.