For sure get an SSD! The increase in speed for boot time and overall OS and application "snappyness" will be very noticeable, and makes working with the system way more enjoyable overall. I know it kills me to work with a system without one in it now haha Even though you should be keeping good backups anyway using the SSD for OS and apps and HDD for storage will help prevent you from losing data in the event of an OS crash, which I have been seeing more and more lately (Thanks windows 10).