The beauty is that they are walkable to each other. Great restaurants in Lambertville and usually cheaper and less crowded. Cheaper parking and far more accessible. New Hope just has a lot more and a bit more hip. I like to park in Lambertville, walk across the bridge, grab drinks and shop in New Hope, walk back across, and dine in Lambertville. It's a great way to enjoy the best of what the two towns offer.