I use Laura Mercier's Mineral Powder for my mineral foundation and it works really, really great! It feels really moisturizing but still controls oil. It really holds the mineral makeup for the whole day.
I like the Smashbox Photo Finish Primer in Light because it leaves a velvety smooth feel to my skin.
I have tried Make Up For Ever HD Primer. Several people like this primer but it just didn't do as well on my skin as the Smashbox did. It just depends on a person's skin and their preference.