I recently had them come out to fix a broken back ...

I recently had them come out to fix a broken back flow, as a well as a couple of heads. Overall, the technician who arrived was quick and diligent and seemed very knowledgeable about the entire system. Like everything else relating to home improvement, if you have the the knowledge to fix the simple things yourself (i.e. sprinkler heads), you will save quite a bit of money. Sprinkler heads are extremely marked-up and are quite easy to replace if you do them a few times. They quoted me a price to fix my back flow, multiple heads, as well as a shutoff valve in one of zones that was very close when all the final work was complete. I would recommend them for quick repairs, as well as easy repairs if you value your time.