Mice and headset

Need some input about the steelseries sensei RAW gaming mice 

http://www.ebuyer.com/413845-steelseries-mouse-sensei-raw-wired-mouse-glossy-black-62154

 

and the Corsair Vengeance 1300 Analog headset

http://www.ebuyer.com/285854-corsair-vengeance-1300-analog-gaming-headset-ca-9011111-ww

 

Both of them are on sale so I'm just wondering wether they are going to be a good buy or not. 

 

thanks,

Atobe