[kaisen]

I would recommend a 2007-up Suburban-length GM, whether it's a Sub, Yukon XL, Denali XL, or Escalade ESV. If you've got the money, I'd suggest the 6.2L 6 speed in the higher trim levels (std Denali/Escalade) -- 403 horsepower, 417 ft-lb torque, and still get nearly 20 mpg cruising the freeway with a steady foot.

The GX and Landcruiser are fine, but the third row is an afterthought for bilateral amputees.

If you drink the Toyota Kool-Aid, just buy a current-gen Sequoia and be done with it. Smaller than a Burb, but still powerful and comfortable, and way bigger than the GX/LX Lexii.

Also consider the Mercedes GL450 (Bluetec!) but, again, the third row is smaller than the Burb but still bigger than the Lexii

If you just cannot buy a GM, Ford makes an extended length (EL) Expedition or long (L) Navigator that is a great alternative. They do have an independent rear suspension, and the third row seats fold flush (if that's important). The old 5.4L is nearly 100 horses down from the GMs yet gets the same fuel economy. I wish they fit the new 5.0L or 6.2L, or even the 3.5L EcoBoost.....maybe soon. With the extended Expy/Navi there is zero reason for you to consider an old Excursion....they pale in comparison.

Also, don't laugh, look at the GM Lambdas.....GMC Acadia, Chev Traverse, Buick Enclave. They are bigger inside than a Tahoe, but smaller than a Burb -- mostly behind the third seat, the third seat itself is comparable in size/comfort to a Burb. But being a car-based front-drive-based platform it isn't truck-like in its dynamic attributes. It's the largest crossover, by far. If you're looking for passenger comfort and not cargo space or ability to tow, it might be a good fit.

Smaller 7 passenger crossovers that might work: current Dodge Durango (built on MBZ GL platform), Ford Flex or even Explorer, Lincoln MKT, Toyota Highlander, Honda Pilot, Audi Q7 (stretched Touareg/Cayenne),

As Matt mentioned, the Nissan Armada or Infiniti QX56 are bigger than the Tahoe/Expedition (std) but smaller than a Burb or Expedition EL. It might work. Even though it's an aging platform and drivetrain, they are competitive. Plenty of torque. Fuel economy sucks. Independent rear suspension. Flush folding third row.

Still, I'd end up with a Burb. There's nothing they don't do pretty well, and you'll never find yourself wishing you had gone bigger.