Regardless of what chain, it all comes down to the quality of the meat and the the skill and care of the cooks. Varies from location to location, day to day.
I'd vote Weber, and their parts and after sales support is way beyond my expectations. I sent an email question on a Sunday morning and received a detailed personal reply referencing the part # I needed, price, and ways to order within 2 hours. I couldn't have been more impressed.
A friend...
Really great simple to make meal, can't beat it. If you're feeling non traditional you can always put some cheese on top and pop under the broiler for a minute to finish it off.