Create a high-quality image of a delicious sandwich featuring four juicy hamburgers, three types of melted cheese, fresh lettuce, pickles, crispy bacon, and a golden, tasty bun. The sandwich should look mouth-watering and indulgent, with the layers of ingredients clearly visible. The cheeses should include a variety of textures and flavors, and the bacon should appear perfectly crispy. The bun should be golden brown, slightly glossy, and incredibly appetizing. The overall composition should be vibrant and detailed, capturing the ultimate gourmet burger experience.