Due to the pretty big price difference when setting up a saltwater tank, did you use Live Rock or Lace Rock? They look somewhat similar, but offer hugely different benefits (with of course, their own disadvantages). I've seen people use both in order to cut some costs when trying to design their bigger tanks, with others who just one only one or the other.
Have you tried to use both, or lace rock instead of live rock in your saltwater tank? How did it go, and would you recommend it for someone else to do?