Which airline do you think provides the best MILES deals?

It'd be good if you could elaborate on this questionmore- do you mean which airline has the most sweet spots in their award chart, or do you mean which airlines runs the most frequent redemption discounts?

Regardless of which it is, there is no one best frequent flyer program. Each of them has their own use cases- British Airways Avios for short haul travel, Alaska MileagePlan for trips to Japan, United MileagePlus for city hopping, and KrisFlyer for travel to the Middle East and Africa. When you dive into the world of miles and points, you'll learn that it's really different tools for different situations!