What is the difference between the Classic Series and the Essential Series?

The Hardwares is the difference.

 

Here are the specific differences:

The Essential Series - features very simple, polished finish on the Stainless Steel Hardware.  The buckless have roller edges which make for easy tack adjustment. The Changeable Browbandss have a simple polished button snaps at the closure.

The Classic Series  - features embossed, hardware with a Western flare that shows off Jerimiah Watt's Horse Shoe Brand hardware. Also made of Stainless Steel by a saddles maker.  The Changeable Browbands even have Concho covered snaps at the closure.  

Here is what is the same:

Both Series are of the same high quality materials and workmanship.  The Classic & Essential use only Stainless Steel hardware and Equine Strength BioThanes. The hardware is selected for its Equine Strength and smoothly finished edges. Snaps are thumb-touch easy with sealed, oiled chambers. They both carry a LIFETIME Warranty.