2013 Macbook Pro, 16GB RAM, i5 dual core, with 1 500GB SSHD. The upgrade to SSHD made a huge difference to the overall performance of the machine and is a worthwhile expense in any music machine. I wish I'd done that before the RAM upgrade to be honest. I'd have gone fully solid state over hybrid if I'd had the money at the the as well. The read time to and from the HDD is mega fast.
Absolutely no issues with any of my ITB editing software, or use with Ableton running multiple synths and plugins in a live environment.