An Air is around £929 currently and the Pro starts at £1,899. You really need to be able to justify that extra £1000. Don’t write off the Air just because it’s not the best, it’s an amazing machine still with bags of performance.
I definitely agree with Lee here, the MacBook Air remains the best Mac Apple makes for most people.
That said, the dated design does make it feel a bit behind the new Pros now, so I am really looking forward to the next revision of the Air’s hardware next year.