"Ignoramus21090" wrote in message
...
I am thinking about hiring a concrete company to redo out driveway and
other concrete work. What I really want is that the driveway should
stay level and crack-free for years, as cracks seriously nterfere
with my material handling. How would I ensure that? Is that a matter
of putting more gravel, more concrete, different concrete, or what?

It is going to crack, eventually. Expansion joints and scoring are
recommended in addition to a good base, adequate thickness, reinforcement,
proper curing and so on.