There are many players who delight in declaring “no-trumps,”
overlooking the fact that they may hold a suit declaration that would
be certain to win the game without the risk attending a “no-trump”
make.
Although one more trick is necessary at hearts, the chances are that
if the game can be won at “no-trump,” it will be won with equal
facility at hearts. The adversaries may hold an established suit or
may establish and make a suit at “no-trump” which it would be
impossible for them to bring in with a trump declaration. There is
no rule so universally followed among the better players as that of
declaring hearts in preference to “no-trump.”