This is a GREAT service! We discovered this service when we first moved to Arizona 8 years ago since then we've been loyal customers. It's a great option if you don't want to go out to dinner.
Yes, we've had a few bad experiences over the years but they are always nice enough to give us a coupon in the mail to make up for the bad experience. In certain cases we've even gotten refunds due to a resturant making a mistake in a meal here or there.
If you like resturant food but don't always like to go out for the resturant food then this a great option for you! Our household really does depend on this service a lot and its a great service overall even though its a bit pricey it is still a nice little luxary to have.