I've decided to abandon wired peripherals and have decided to buy an apple wireless keyboard. In addition to this I also have a mx revolution which I'll be replacing with another wireless mouse that doesn't have a charging base. So my questions are these. What is the battery life like on the wireless keyboard? Also what would be the best wireless mouse minus charging base, and what would be the expected battery life on this too? I'm looking mainly at the logitech vx and Microsoft arc.