The Expressway Visual at LGA (when flown properly), I think is a tougher/more fun approach...
Just wondering why you think this?? You fly to the tanks/DIALS, follow a highway, and make a 180 around a ball park to a runway. Whats fun/tough?
The visual up the river at LGA is more fun IMHO than the expressway because of the views, especially when they have you at 2500 feet.
Personally, the river visual at DCA is a TON more fun, or the circle to 33. And everytime I've had to actually shoot that stupid LDA approach, the GS is always all over the place. That always makes it an interesting approach.