I did a few comparisons for you guys.. Since I'm on vacation, I didn't have all of my foundations with me. Just MAC Studio Fix Fluid and Make Up Forever HD. I'm sure Estee Lauder Double Wear in the shade Tawny may come close to these as well.
MAC and MUFE look almost exactly the same. Nars is the slightest more yellow.. and looks the best on me of the three. (I actually think I did a typo.. it may be mufe #125.. the label has rubbed off!)
This picture is taken indoors with flash.
I took a picture yesterday morning after I applied my Nars.. matches my neck perfectly. :)