"... resisted the decline best ... = strongest RS..." That IS what I said. Interesting that you mention the 300MA. I once did a study based on it only to find a VERY high percentage of winning trades but a low overall return. Seems it filtered out too much. Speaking of "filtering"... much of the market's noise is playable. Trading should include an attempt to capture part of it and not just a "piece out of the middle" of a trend.