33,000 gallons in the Texas heat. Before we went salt, we were pouring 1.25 gallons of 10% liquid chlorine in the pool DAILY. (In the summer) For us, going salt was the best thing we have done to the pool. For us, there are no negatives at all.
We installed the Cirrcupool SJ55. At the time, the RJ60 was considerably more money. If I were doing it today, the RJ60 is the only one I would consider.
Bryan