There are many salt chlorinators to choose from, it comes down to what you want for your pool. Manufactures have stand alone salt systems and automation systems that incorporate salt. Salt chlorinaters use salt to produce chlorine at a constant rate while pump is on.
Automation packages go from basic to complicated systems. This allows you to simplify life by using your computer, smart phone or tablet to control your pool with a “touch” of the screen, including color lights.
The other item that can help your system and your electric cost is a variable speed pump that can be controlled by the automation. This allows you to get the desired flow for the spa, etc. Most are now energy efficient.