I have a Logitech v270 for my 15.2" final gen Powerbook.
Its a great general purpose mouse, but there are times it lags or loses connection.
But for me, I wouldnt give it up for anything right now..
Im a grad student and spend lots fo time online researching articles and writing papers.
(on my off time I use the trackpad while sitting on the sofa with a beverage, my spouse and 2 greyhounds)
And I love the fact that the V270 has an on/off button and it uses regular AA batteries. I keep a pile of AA rechargables for my misc. gadgets.
Not having to maintain a seperate charger or another damn cable to charge it is sweet.