Sweet & Salty is a tasty fusion I cannot do without. With sweetness ultimately being my favorite flave.
I can do without Sour, that one is not my most favorite. Same with spiciness because it's too mouth and stomach hurt-y. xD On that note, I would say that "Spicy" is indeed a sensation more than a flavor. Bold flavors like Chili and Wasabi deliver a spicy bite to our sensors.