The three things people ask before they spend the money
Is Las Vegas water actually safe to drink?
Yes, on the published record. Both the Las Vegas Valley Water District and the Southern Nevada Water Authority state the minerals that make the water hard are not a health risk. The water authority goes further and says softening is not a necessity to protect your health. Hardness is a nuisance and an appliance cost, not a safety problem.
Do salt free systems work?
Not as softeners. They condition the water, and the water authority says so in plain language, adding that researchers consider the salt free labelling misleading. If what you want is an end to spotting and film, a salt free unit will disappoint you. If a salt based unit is impossible in your house, that is a real constraint worth discussing.
Does softened water taste salty?
It should not taste salty, but softening does add sodium to the water, and it is fair to want drinking water that has not been through it. The common answer is a softener for the house and reverse osmosis at the kitchen sink. Worth knowing: softened water is not ideal for houseplants, because of that same salt.