I like both the PPRUNE and Flyer forums, but for different reasons. I use both as a way of maintaining a connection to aviation during the working week, and for prompting thought about my approach and technique when I am away from the airfield.
I like the sense of community on the Flyer Forum, with it's fly-ins, impromptu gatherings and fast-paced repartee, but PPRUNE has a wider base of experience (perceived or real I am not sure?), and I find the mil forum as a great way of keeping in touch with what the RAF culture is turning into.
I heard a great quote yesterday:
Opinions are like @rseholes, everyone has one, but they don't tend to show them in public
