I have the Polaris Auto Clear. Although I'm a new pool owner, I have been mostly displeased with it and would recommend against it. We've replaced one already and my pool builder finally said some others he's put in have been a little trouble.

Now my problem with it is periodically I have to unplug it / replug it to get the readings to show up when I press the 'Test' button - which gives readings I need such as chlorine generating. Also, you will stay on hold about 15 minutes before talking to someone at Polaris tech support. Not sure whether that's good or bad.

I must admit that I have pretty high standards regarding things I spend my money on.

Some may disagree, but if I did it again I would take a chance with another unit.