Amazon's MacBook deals tend to get especially good during its major sitewide sales, and with its second-ever Big Spring Sale now live from March 25 to 31, we're not surprised to see discounts of up to $400 popping up across the Air and Pro lines.

Ultimately, your decision should align with your specific requirements and budget. If the $200 price difference corresponds to your performance needs and usage patterns, the M4 is a worthwhile upgrade. Otherwise, the M3 remains a dependable and cost-effective alternative.

But does the MacBook Air 15-inch (M4) offer good value for money? And is it worth upgrading if you already own the M3 MacBook Air? We’ve pulled together the biggest reviews from