The Logitech LX7 is a cordless mouse. I've been using it for about 4 months and rather enjoy it. It is recoginized immediately when plugged in (I use with Fedora Core 6, tested with Fedora Core 7), but needs a little tweaking as the default pointer movement is a little fast and you need to get the extra buttons recognized.
My xorg.conf section for the LX7, including commented out options I decided not to use:
Section "InputDevice" Identifier "lx7" Driver "evdev" Option "CorePointer" #Option "Device" "/dev/input/event3" Option "Name" "Logitech USB RECEIVER" Option "Vendor" "Logitech" #Option "Dev Phys" "usb-0000:00:1d.1-2/input0" Option "Buttons" "9" Option "ZAxisMapping" "6 7 8 9" #Option "ButtonMapping" "1 2 3 8 9" Option "Emulate3Buttons" "0" Option "Resolution" "1200" EndSection
Back and forward in Firefox works using the tilt wheel, but opposite of what you'd expect - tilt-right goes back and tilt-left goes forward. Middle click works fine, but occasionally my finger is at an angle and the tilt wheel winds up being triggered. I haven't gotten the two buttons behind the scroll wheel to work, but I've not really had time to play with it. I think I recall that events register for them, but I've not setup any actions yet.
Some other configurations you'll find wind up using 'xset' to slow the pointer speed. I do not.
Some other pages to check out of different xorg.confs for this mouse: