Which mighty mouse

Which is best. The wired mighty mouse or the wireless version?

They're both the same. Do you want a wire or wireless?

Do u have to buy batteries for the wireless mouse and keyboard or does it come with some kind of rechargable batteries that you can just plug into you mac or something and recharge.

I believe you have to buy batteries, but you can always buy rechargable batteries.

They come with regular batteries and you'd have to replace them with rechargeable ones if thats what you prefer.