VW Touareg TDI. Not sure what your budget is or if you are looking at new vs used, but we bought our 2013 Touareg TDI almost a year ago and it is the best of both worlds. It is a towing beast but still has all of the comforts and luxuries as a high end car. We tow an XLR 24' with 2 bikes... roughly 6000#. We just got back from our yearly trip to Indianapolis Motor Speedway and averaged 15.6 mpg while towing. Without towing we get around 30 mpg (mostly city). Driving this thing around feels no different than driving it's Audi or Porsche counter-parts but at a fraction of the price. The Touareg is built on the Porsche Cayenne platform and many have gone from the Audi Q7 to the Touareg and said that they prefer the comfort of the Touareg. TONS of interior room as well. 3 adults can sit in the back seat comfortably (not sure how long I would want to, but being back there myself, it really wasn't bad at all).
Just my .02