I used Barringer Landscape twice. The first time they did a great job, knowing I was planning more work. The second time left much to be desired; I will never use them again. The aesthetic design was very nice, rating an "A". The drainage was deplorable, rating an "F". The workmanship was hit or miss, depending on who was working that day, rating from "B" to "D". Cleaning up at the end of the day was the similar, depending on who worked that day-- some days they did a good job, other days they left tools and equipment everywhere -- rating from "B" to "F". Warranty work and customer service, in the end, rated an "F".
In one area, when the first set of plants died, they waited until days before the warranty period was over to replace. The second set died again in less than 4 months. They said I had over watered, but they set the irrigation. (They said the second set of plants were not warranted from the day they were planted, but from when the final invoice was sent. So if they installed the warranty plants three days before the end of the original warranty period, if the plants live four days they have no obligation to replace.) I have the same plants in other areas and those plants are doing well, with the irrigation they set. The problem, in my opinion and they have not demonstrated I am incorrect, is ponding of water when it rains. They did not provide a proper drainage scheme. When we get a lot of rain, the water sits and does not drain. This is the third drainage problem I've had with them, which they were oblivious to until I pointed them out. They did correct the first two, but refused to correct this one.
They made the design, brought in the soil, set the drainage, set the irrigation, picked the plants, and although two sets of plants fail to live a full season, they state they have no responsibility to correct the problem.
While I did like their design, their poor implementation and high cost means I recommend you look elsewhere.