Hillsdale is a charming town with a nice town center and park, as well as shopping nearby.
It is near the Garden State Parkway and Route 17 but still a quiet town as far as traffic and other noise levels are concerned.
It has excellent commuting to NYC, Newark, Hoboken and Jersey City via train and (for some of them) by bus too.
Prices are reasonable too by Bergen County standards.
Prices are expected to go up about 4.4% this year so get in while you can.
Ridgewood is more crowded and more expensive so you get less house for your money (not to say that it isn't a charming town though).
Oakland is not a convenient commuter town since there is no train station.
Westwood is somewhat of a step down from Hillsdale with no benefits in return.