The iPhone 5C and 5S will not be Apple's most successful products. Even though those are the products available to most consumers, the products that will be the most successful are the laptops produced by Apple. There are most likely better phones on the market for consumers, but the lap tops are first rate.
While the birth of the iPhone revolutionized the smartphone market of the world, the iPhone is not apple's most successful products. The prestige of their mobile products should not negate the prestige of their computer/tablet products. They have constistently improved, and become industry standards in multiple fields including art, production, and creation.