I have no knowledge who of the three stainless water tank is more reliable in terms
of long-term usage or what gauge the manufacturer used. I think you can vouch on
these three since I have seen in Home Depots the displays of the assorted sizes of
these stainless water tanks and it seems they are well made. But in our area, most
big hardware stores carries the Bestank brand.

If let us say you will purchase one stainless water tank, if it is not so big, then probably
your tower can be made of pipes or thick walled angle bars with main frame secured
on a concrete footing. I guess for concrete tower, if the tank you will use will be the
really large ones. In my case, I used concrete tower support since my concrete reservoir
is large enough to load water and last us for four or five days.

If you know someone, an architect or structural engineer, better consult your concern to
get a definite and right answers.

Good Luck bro ! :goodluck: :whistle: