Hello all. I purchase an SSD for one of my computers and put it in my MacBook. It’s a 128Gb drive and I’m using the standard partitioning scheme. It is a difference between day and night. It’s so fast even being limited on SATA that I’m planning on keeping it in my MacBook. I mean 20 sec to boot apps are almost instant for opening etc. I highly recommend getting an SSD for your hardware 
I can run Xcode without waiting 10 min for it to load and a few seconds between typing. The HDD did kind of tank the performance. The ssd dang I can type move around quick etc. it’s so super fast