I've used both, I prefer the feel of V's, and with abit of manintanence they are fine, but maggies are less hassle, they work whatever.
V's also go cranky for no real reason, they can go shite, and feel really bad with a knock of the wheel, cables need lubing, the pads wear at funny angles, theres not many pads about. but I still like them :-
I'm wrong, Heatsink pads are now out, that is no excuse!
Plaz arn't bad at all either mind! bit expensive maybe.
Theres nothing wrong, or amazing about running a rear V.