He loves me, He loves me not. He loves me ... El Capitan debuts on September 30. A modest upgrade to OS X, but all suggest it's worth getting....Jim Hamm

Now if you want to know what others think, read this article. Here's an excerpt:

"After testing El Capitan for a few weeks, most sites agree that while OS X 10.11 isn't a massive overhaul, its performance enhancements and speed boosts make upgrading to the free new OS essentially a no-brainer."

El Capitan is really getting overwhelming approval.