There really are only two choices - a strong central bank that comes with rare(r) but deep economic crises, joined by long periods of relative prosperity - or a weak/non-existent central bank where the economy is in a more or less perpetual state of chaos and grows more slowly but sustainably.
At the end of the day, if the legislative authorities are unable to maintain fiscal discipline, it doesn't make one damn bit of difference how the currency is controlled, nor does it make one damn bit of difference if the controlling agency's books are open to the public or hidden behind a veil of secrecy.