what you should base your decision on is more,
whats your skin-type,
and what finish you are looking for.
Foundations are definatly a product where what sounds good in theory
doesn't allways work in practice.
studio stick's are absolutely awesome.....
but one foundation that works great on one persons skin, might not be
so great on another's
i LOVE hyper-real but its not too good on my (extreamly oily) skin
I personally find, There's never really a definate rule to make-up,
try it out at your m.a.c counter and if you love it......
you have got yourself a winner