batteries are a pain... i probly spent over 50 bucks on my old logitech mx700 cause that thing would chew through some power.... i got a g5 now, and i LOVE IT. the feel is amazing... it has plenty of buttons for me, and in a very convenient location for my hand.
plus the on the fly DPI change feature is great for some games. I must say i dont really utilize this feature to its max, but nevertheless this G5 is everybit worth it. the wire is hardly noticable.... actually, i cant feel it at all (i use the heaviest weight inserts on the mouse).