The original is one of my most used Mac apps: being able to pick any colour from any program with one keystroke and a click, then to paste the hex into my text editor with one more keystroke has been invaluable. No idea whether version 2 is worth paying for again, but a quick scan of the site makes it look good.
The new version supports some cool new features.
eg.: Hi-Precision Mode: When activated it increases zoom and slows down your mouse so you can pick any retina pixel on screen - currently no other picker offers this.
