River, for what its worth, I use some platinum Samples kits myself in Session drummer 3 and they are great sounding kits. they are big in velocity layers and that's the difference between real sounding drums and something that sounds fake. The Jim Scott brush kit was the one I was thinking of as well.
However, if your on a budget and you already have decent sounding brush hits my previous post about slice/drag/drop is the best, cheapest method.