Early Producing Oak with large Acorns?

Is there some type of oak, perhaps a hybrid, that produces large acorns early?

These guys have been breeding oaks for a while:

http://oikostreecrops.com/products/?route=product/category&path=62_86

Bigger acorns, sweeter acorns, more acorns, earlier acorns, acorns on younger trees, acorns without diseases/pests... they're working on all that, so they offer ten cultivars (I think) with varying combinations to suit your preferences.

I've ordered other plants from them and been delighted. They're also local to me, so regularly plug them.

Thanks Mike! Great website! Lots of other great plants on the site too