With a single speed pump I assume you will prefer to run fewer hours. Also, without automation, the Pentair Intellichlor is only adjustable in increments of 2% from 0-10% and 20% from 20-100% generation. Not a big deal, but you would have to adjust your pump run time often to manage your FC generation.
Most of the Circupool SWCG's are more adjustable. You would need to research them to see which best fits your needs.