To replace my 2010 MacBook Pro that's well past its prime. It runs slow. I wiped it clean and reinstalled the OS earlier this year, and that helped for a while, but it bogs down when I run Lightroom and Photoshop at the same time, which is often necessary when I am processing photos. Heck, it even bogs down frequently when I have Lightroom and Chrome open at the same time.
Don't yet know what I'm goin to do with the MacBook Pro once I get the iMac next week.
But I do know my photo processing should go much smoother and much quicker once I get it.