@aznkorboi, if you want a shorter charging time to achieve the same miles of range, go for the 32A option. Your charging rate (miles/hr of charge) will roughly scale with the amperage of the charger (if the voltage is the same) so 32A will charge roughly twice as fast as 16A. If the charging rate isn't that important for you, save some money and go for 16A.
We have the Tesla Wall Connector tied into a 240V/50A circuit and get about 33-34 miles/hr of charge on a Model 3 (adding a Model Y soon). But we're not charging anything other than Teslas.
Wall Connector
I assume your first Telsa will be a Model 3?