...fascinated with the whole squatting thing. I'm curious; did the landlord do something bad; neglect, what? (I lived in SF, CA for a while, and know a bit about the squatters' rights-thing...explain more. You could point to a page, if you like since this is way OT.
Anyway, if I were you, I'd go for whatever holds the longest charge and most trouble-free. I don't know if the Logitech has switches like the Apple ones (smart). But the Microsoft ones always had great ergonomics. I wonder if the Logitech does have best of both worlds...my last experience was their drivers crashing OS 9, a while back. Also, Macs seem like second-class citizens in their world, it appears.