In my opinion, salt systems are way overpriced (the ROI is questionable) and I talked to a friend who owns a pool with a tablet chlorinator and he said there are too many negatives of long term liquid chlorine use. He mentioned how liquid can raise the PH and then it requires additional chemicals. For $80, I thought the tablet chlorinator would be a good option. My friend has the smaller Rainbow and loves it. However, he always mentions that if he has to buy it again, he would go for the higher capacity.
Just to compare, I did look at the Liquidator system but that was almost $200 and the liquid chemicals are more expensive. I can go to Sam's Club and get a bucket of tablets for the entire season for ~$100.
Also, I run my pump 24/7 because in the Northeast my pool is open for 3.5months. A lot problems I have read about tablet chlorinators results from people not running their pump enough.