Ok, I found my "perfect" foundation. It's Make Up For Ever Pro Finish Powder in 177. It's a powder that can be built up to full coverage. But, you don't need a lot of powder to cover really well. I've just been using concealer to cover some spots, tap a little powder on my face, and then buff it. The powder can also be applied wet (I guess for fuller coverage) but I think that this is unnecessary because the dry application coverage is so good.
I have stopped using my Bare Minerals foundation (which I wasn't too fond of anyway) and my MAC MSF natural. This completely blows MAC Studio Fix power out of the water. You will think that Studio Fix powder is garbage after you use this product. I have also used Becca Mineralize Foundation, and the coverage and color of the MUFE is wayyyy better.
I think that this powder is slightly yellow based (the packaging says that 177 is a neutral color, but I think I see yellow in it when it's applied). The 175 was a perfect match for me when I sprayed my face with Fix+ after I applied it (which means that the powder oxidizes to a darker color), but since it will be Spring soon, I went with the darker 177.