I planted a lawn with St. Augustine grass and it looked great. In the spring I thought I had never seen grass so green. Let me mention that we were getting regular rain showers throughout the spring. Once summer rolled around, the regular rain came to a halt. The temperatures got warmer and the sun was drying out everything. At this point, the grass quickly began to lighten in color and then turned brown.
I'm not saying don't use this grass, but you need to be prepared to water your lawn if you do. It doesn't do well without water for any significant period of time. If you are willing to water your lawn regularly then this might be a good choice for you. I definitely like the way my lawn looked in the spring.