It's kinda a mix bag. The roamer-g switch makes it feel a little mooshy but it works too make it quiet even though it's tactile. You can't find any custom keycaps for it since roamer-g switchs isn't the standard t shape. It's a okay keyboard all away around but not bad in anyway. It's just okayConsAll plastic buildFeels kinda like a membrane but isn'tCustom keycaps won't fitSound control uses buttons no scroll wheelProsBluetooth and USB connectivityQuietSmooth enoughBuild in wrist rest "plastic"The G603 is a nice keyboard for most purposes when sitting on a desk. But if you need to move it around a lot, kind of the purpose of a wireless keyboard, it is to large and heavy to be practical. I stupidly assumed the large wrist rest was removable, you know like every other modern keyboard on the market. But no, between the large chin and the large forehead, where the logitech specific buttons sit, this thing is almost 80mm deeper than the keyboard needs to be and takes up to much space on your desk.Do yourself a favor, if you really want a very responsive wireless keyboard, and spend the extra money and move up to the G915.Nice keyboard mouse combination, this was my first mechanical keyboard that I owned. All my other gaming setups I used membrane keyboards. To be honest It took me a little bit to get used to especially with the "g" buttons on the side. But its nice.... no input lag issues, the only thing I wish it would have is backlighting, which I understand comes on the more expensive models.TIENE UNA LARGA DURACIÓN DE BATERÍA TANTO EL MOUSE COMO EL TECLADO, LAS TECLAS ROMEO SON UN POCO RUIDOSAS, EN CUESTIÓN DE JUEGOS NO SIENTO NINGÚN RETRASO.Love this keyboard!I was building a new setup and gave my old one to my wife and bought a new set. That is how amazing this set is. Battery lasts a lifetime too.Where to start. First, the keyboard is entirely incapable of connecting to a mac via bluetooth. I posted a video on the keyboard amazon page.2nd, logitech support non existent.3rd, the mouse and keyboard can both switch between 2 devices this is true. But you have to flip over the mouse to do it. Since it was a combo I made a logical assumption that the keyboard would switch both. NOPE.If you are using two computers on one desk like I am it seems on paper like the perfect setup. But it is a joke of poorly thought out implementation.