I have a 30" AG pool and I have been using the pool frog chemical system for the past 7 years.

Living in northeast Ohio, I get 3 to 4 months out of the pool. It will cost me $400 to get this years supply of chemicals and I thought it would be fun and long term savings to change to a salt pool. I'm currently considering the Jandy Apure35PLG at $458, Circupool IS30 at $579, or a Power Ionizer at $269. Power Ionizer still operates with low amount of salt. I was exited to do this at first but after researching my head is spinning and not sure what to do?

Any help would be very much appreciated! I'm open to other thoughts and ideas?