i cant believe that ANYONE is paying money for a one button mouse anymore! "here is my money, can i please have 1/3rd of the productivity?" - thats nuts!
ive used a range of the logitech wireless products and they all seem to work really well. the biggest drawback with going wireless is battery use... its just another thing to have to worry about. also i dont really care for the added heft to wireless mice from the battery weight...