SPS feeding- What are you using?

[fencer]

I am still wondering what to feed SPS's.I have had a chance to use marine snow,black powder, reefriods and coral frenzy. In all cases LPS's respond very well to those products. But I am not sure if SPS respond as well. My SPSs exhibit polyp extension most of the time food or no food. I have heard that oyster eggs work. I feel that most of the food mentioned above do not stay in the water column long enough. I tried to target feed though.My next try is Michika's food brew, I plan to use a liquid extract of the food. As i feel the smaller particles will stay suspended long in the water. Are there better products. Comments of what other people are using (eg. zeovit food)?