MacBook Optimal Disk Formatting What's the optimal formatting for a MacBook disk?

My disk seems to be formatted as a LVG (Logical Volume Group) and it seems super slow...
Optimal is what it's formatted as when you get the machine.
GUID/HFS+ 

LVG/Core Storage is necessary if you ever enabled FileVault. [Some updates to Yosemite also seem to have triggered that conversion too]

Try Blackmagic Disk Speed Test to see what speeds it's actually achieving.