OP, me too! My 2004 MDX is probably ready to be traded in, and I'm stuck on either another MDX or the GLX. Drove the Lexus (hated the mouse on the center console, what is that?), LOVE the look of the Acadia but it drove very "truck-y", same with the Volvo XC-90. Did not like the Traverse, very truck-y also. I would get the MDX tomorrow but I don't like the current design and I want the backup camera, which means buying the Advanced package and I don't need all that. Plus, have heard rumor the 2014 will be a hybrid, and then I could possibly get a great deal on a non-hybrid at the end of the 2013 model year.
I won't go less cargo space than I have now (DH shakes his head, why, what are you hauling around, but it's a no-cross line for me) and that limits the options. We rarely use our 3rd row but I love that big box like area in the back.
Haven't looked at the Infiniti or Mazda yet but the Mazda looks to me, too small in the back end, same with the BMW. So I am stuck as well.
Nothing wrong with my MDX, 105,000 miles later, but I'm ready for a new one and just don't love anything. And when you're going to spend $35-45K on a car, you want to love it....(slightly used car, that is)