if you use a good enough foundation, you don't need a primer. it's the same theory behind eyeshadow primers, using a primer helps to make an average product look like a much better product.
but with your skin, instead of buying an average primer and an average foundation, just splurge and buy 1 better item, because it's all over your face - and i would want to put the best thing i can afford to on it. secondly, unlike eyelids, i don't like to feel a thick mask on top of my face (too many layers of product). but if you do use a good primer with a good foundation, of course the results would be even better.
top foundations - some based on my opinion and some are makeup artists favourite (will mark those with a star)
these are all liquid foundations, powder will not last.
old but goodies:
armani luminous silk *
anything cle de peau
estee lauder double wear (but very mattifying/for younger skin) *
chanel vitalumiere aqua & le teint
makeup forever HD *
charlotte tilbury 2015 *
koh gen do aqua foundation (never tried, but i heard succch good things from MUAs) *
Mac Studio face+body *
new(ish) and hyped up:
dior backstage foundation *
by terry densiliss foundation (for older skin)
estee lauder futurist aqua brilliance *
la mer soft fluid foundation
best setting spray - urban decay all nighter
if you do want a primer, find 1 that works with your foundation (as not all formulations will work well together)