I pretty much agree with the above post,,although I would swap 1 and 2..
In my exp. st aug tends to take a little more care to prevent diasease probs. it is the best looking by far.
Cent. is very easy to maint. and it's water requirements are slightly higher than st aug.,it also doesn't hold up well to heavy traffic, but still I would put it at the top.
Burmuda....is great if you don't want to do much at all,it is very tough and looks ok if cut weekly.
Zosia...put it in someone else's yard!!!