I've put thousands and thousands of miles on the GM Lambdas (Saturn Outlook, GMC Acadia, Chevrolet Traverse, Buick Enclave). I've got a few clients that have them, including my uncle.
They are the largest of the crossovers. If you need, or prefer, that size you won't find too many that compete. It's larger inside than a full-size Tahoe. The rear doors are very large, giving good access to the middle and rear seats. They've got a long wheelbase for a nice ride, good stability, and good towing characteristics.
The 3.6L Direct Inject motor is powerful enough but they are heavy vehicles. Still, the overall performance isn't much different than a 5.3L Suburban (similar power/weight). Towing a car trailer really taxes the powertrain. A smaller trailer like a pop-up camper works very well.
Quality-wise, the 2011 and 2012 models have done pretty well. But they're relatively mature now as they've been around since the Fall of 2006.
The Explorer is a little bit smaller, but I really like it. I drove a friend's Limited round-trip from Minneapolis to Knoxville, TN and a few cities inbetween. I think they drive nicer than the Lambda's, and if you're into technology the Ford kicks GM's butt with the Explorer.
Edge has no third row, neither does the Lincoln MKX. Or Nissan Murano, or Touareg, or Lexus RX, or....
Also consider the Flex, especially the 3.5L EcoBoost model. Wow. It's bigger than the Explorer. But also.....ummmm.... controversially styled. You either love or hate it. But it is bigger.
So is the Lincoln MKT that shares the Flex underpinnings. Certainly less boxy, and fancier. I'd give the Enclave a huge advantage in understated styling, inside and out. But that's subjective.
Other large crossover considerations include (in this order IMHO) the new Infiniti JX, Toyota Highlander, Mercedes GL, Dodge Durango (built on MBZ GL platform!), Kia Sorento, Audi Q7, Honda Pilot, Acura MDX. If towing is a serious consideration, the Durango, GL, and Q7 are head-and-shoulders above the rest.
Bang for the buck? I just went through all of this with a client who started out looking at Highlanders and Pilots and ended up with a 2012 Chevrolet Traverse LTZ AWD with heated/cooled leather, center row buckets, huge panoramic moonroof, backup camera, factory remote start, 3-zone climate control, etc, etc, etc. Only had 19K miles and we bought it for $29K in Colorado. So two years and 17 miles of bumper to bumper warranty, and four years and 81K miles of powertrain warranty remain. Originally had a $41K+ MSRP. His thoughts were that the Chev had more horsepower, more torque, better freeway fuel economy, performed better in crash tests, better engine/trans warranty, and was significantly larger with more features for several thousand less. Can't fault him. And he's no dummy (engineer) -- also has a 997 Turbo.
YMMV