I only rate places five stars if I have been there a few times and consistantly have had great food for a good price. Carrabba's fits this profile. There is a trio sampler that is a great way to try three different dishes. Talk to your server about specials not listed on the menu!
Also, the best time is to be had by sitting at the counter and watching the cooks as they whirl around the grill and prep area. If you're nice and chat it up with a couple of them, you may be rewarded with sampler dishes... tell them how you would like to sample the lobster ravioli :)
This is one of the newer Carrabba's so the proprietor is making special effort for his customers to enjoy themselves. When I am in PHX, this is my favorite place to go.