I'm pretty much 1.80 large, the hands are the size "normal size". In my MX510 and 2007 G5 thumb was pretty much under the thumb buttons, so Logitech mice fit perfectly in my hand. When G600 is no different, the thumb is very well located on the front of 6 field.
For the rear of 6 field I do not embrace, thumbs sufficient buckling. The Naga demanded at this point a grasping what indeed was fast, but always for a cramped hold the mouse caused. In general, the hand on the G600 is very pleasant to what is also at the third key, I was surprised that as well is the mouse in hand.
On the third mouse button you have to get used to, for sure. In retrospect, after a little training period, she makes up for me but in shooters just a positive effect as in MMOs, fast grenades at Tribes, reload cancel at BO2, healing potion in Aion etc, just great. A positive feature is the front-back button that you placed on the 4-way scroll wheel (ie right / left incline). One can work in Windows used to quickly without the thumb box to button 4 and 5 to make Müsen, and has 2 fast attainable keys in games.
Almost all keys are freely assignable, DPI switch, a third button, the 12er field, mouse wheel left / right tilt, wheel press, etc. Only the scroll wheel (that scroll up / scroll down) is not new bindable which I think is a shame is the only thing I miss a bit of the Naga. Especially in MMOs I've got like ne normal key of it made and placed Camera Zoom Button on unimportant. However, tilt wheel is quite a good substitute, you have to stop to get used only once tuned.
One probably also have to get used to the weight, the mouse is indeed subtly heavier than the Naga, but weight cartridge not there, so you have to get used when switching from a gaming mouse with weights themselves.
The software distinguishes between the three profiles in the mouse, which will be implemented on any computer including DPI immediately without software, and the software profiles. Software profiles are on the computer on which they were created is stored, but they can incorporate caching and on other computers on which the software is installed quickly. They are available without end, and the software recognizes (if configured) which application / game just runs and loads on request automatically the profile. The 12er thumb block can be set free color (Solid color or pulsate / changing) so that you can see the active profile equal. Theoretically can even record mouse cursor position and movement as a macro as opposed to Naga, but one should, however, dominate or relearning a bit LUA. Macros are easy as with keyboards, either to draw them on the fly on or you is made up of key presses and (Mili) second pause information.
Beautifully no online coercion is also contrary to Razer when the software is (no joke ^^).
Otherwise, it behaves like any other mouse, the wheel scrolls normal way and has good feedback, the pressure points of the buttons are very good, the keypad can be very good "blind" use, stop point matches. Sampling on the Plastikmauspad is excellent, for a liftoff not (mouse lift to move them without Curserbewegung) verspringt the cursor as strong as in the Naga but remains almost exactly at the previous location.
All in all I am very satisfied with the mouse, especially for the price there clear 5 Stars. If you really want to have weights here or would like to customize the mouse precisely hand and has the money on should look over the MMO7, all other I can only recommend a test of the G600.