Is there a gas efficient SUV with decent tow capacity?

If you want a SUV, I'd go with a Suburban. Longer the better for towing. It also weights more, which helps in towing. Mileage is gonna be about the same, suckage, no matter what you end up with. Me personally, I like a CC LB truck at the very least. I used to have a burb and it was nice for the 4 of us and the GSD had her own row of seats. Now with the CC its a bit tighter, but still not bad. The nice thing about a truck is that you can upgrade to a 5er if you ever want too.