See at AmazonAs Amazon's Big Spring Sale starts to wind down, some must-have discounts remain if you know where to look. The problem is they aren't going to stick around for long because the sale ends tonight.

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

If you want a smaller and more affordable laptop and don’t mind having a smaller display, the 13-inch MacBook Air is the best choice. Conversely, if you want the most screen real-estate possible on a MacBook, then a 16-inch MacBook Pro is for you. But there’s more to consider than just screen size.