pro : ~ $ 65 , high quality , come with Duracell , not crap battery , play well with rechargable 1.2 v 2000ma duracell , more mouse button than my gamer self could ever need , roller be frikkin sweet , mouse be super-ergonomic , fit well in hand , keyboard lead , keyboard feel nice under hand , palm rest be not crap gel but some sort of vinyl , low profile key keep finger from get stick on side , 2.4 ghz , come with usb extender for better reception\/longer battery life -lrb- my Antec 1200 be several foot away and could cause reception issue without the usb extender -rrb- , software work quite well . get use to not have mouse acceleration never could be easier -lrb- smooth and accurate as heck ; get use to it after a few day of use -rrb- , supposedly 3 year life time on both mouse and keyboard -lrb- something around 1.2 year with rechargable , accord to Setpoint -rrb- . con : Palm rest do not play too well with my wrist cushion and do not detach , keyboard lead be a bit hard to see , keyboard be not ergonomically shape .