I bought a sunny yellow 7 quart oval dutch oven from Home Goods a month ago, and last night I put it to the test for the first time. It doesn't weigh appreciably less than the Le Creusets I have hefted in the past, and it did the job admirably for a batch of the Barefoot Contessa's chicken w/40 cloves of garlic. All the pieces (except the back) of a small roasting chicken fit nicely inside to brown, and it seemed to do almost as well as the Le Creuset in moderating heat-- it seemed to come to a boil slightly quicker than my 5 1/2 qt LC dutch oven, but it was even throughout the pot, no hot spots. I just turned the heat down a bit, and it worked fine.
The "major" difference was the lack of the resin handle on top, which on the LC stays cool for stovetop use. This oven had an enameled cast iron handle.
The husband reported that it cleaned up as easily as the regular Le Creuset.