Use this company! I had a broken spring fixed and Dan came out right way. The springs were underrated for the weight of the garage door which he demonstrated. He replaced both of them and only charged me for the broken one.
I have recommended a few of my neighbors to these guys and they were all quite happy I did. Some for springs. Some for full insulated door replacement.
I don't find that type of service very often so when I do, I'm happy to share it with others.