The day before our house fire I received an issue of Popular Mechanics, and it was open, where I fell asleep, on the reading table to the article on ISF when the fire hit. Had this technology been around a year earlier, our home would have been constructed with this product. It has turned out better than the article forecast, and the only people I heard grumble about it were those that cut corners and had form blow outs, and those that went to do additions and didn't like paying the price of cutting a solid concrete wall.
I vote ISF, as if you need my approval.