I love this recipe! I've been using this one for a few months now and people keep telling me how good it is. I've put in onions instead of the celery if I don't have celery on hand and it works just as well. First of all the addition of the veggies is healthier, you eat a little more of them and a little less meat. Secondly, it makes it cheaper too because you can use less meat to feed more people!
It's very easy to make and very tasty... if you simmer it for longer the taste becomes a bit richer. Or if you're in a hurry or you like a lighter flavored sauce, you can just stop when the recipe says. You can add in anything you like, obviously, but this is a really good basic recipe! Highly recommended!