I've just gone for the Pooley's ring binder with revisions (and yes, I agree that two-ring is definitely a step backwards). Last year I used Bottlang (unrevised) and I can't find a great deal of difference in the information provided about each airfield (except formatting).
If I liked Bottlang, why did I change? Well, Bottlang ends at national borders, while Pooley's covers a short distance inside neighbouring countries. As I live and fly near the south coast, trips to France are a part of my flying. Pooley's includes Le Touquet, Ostend, Dinard etc. Bottlang doesn't.
As for the choice of bindings, loose-leaf wins for me as I have a kneeboard with a few plastic wallets inside. This makes it easy to take out the relevant pages for a flight and have them right at hand in the air - even printing from the AIP isn't as good as the pages are generally too large to fit into the wallets.
Cheers,
MD.