I need to replace my USB wireless logitech mouse. Getting erratic on me and generally driving me crazy turning one click into two.

Facts:

Mac Mini at the office
Battery life important
Like having a scroll wheel, L/R buttons but don't need more than that.
Want a full size mouse, not a notebook/mini
Could be persuaded to go $50-60 if worth it.

I would be interested in Bluetooth, just because now with my iPhone cord and the mouse usb receiver I have no empty USB ports. Usually not a big deal, but if I can free a port I'm all for it. The mouse on the front desk is a mighty mouse and the bt seems to work fine. If it has a USB receiver, then not one of the tiny ones; just cause if you have to reset it by unplugging it for a few seconds, the tiny ones would be hard to get at as close as the usb ports are on the mini.

I don't really like the mac mouse much. Just seems a tad small and I like my scroll wheel. Have not played with the magic mouse, but battery life and price keep it on the fringe of what I'm really looking for.

Any suggestions?