Many choices - What's Your Favorite Tool?

Reviewing this board shows LOTS of ideas, 22 pages worth at this time. Some for fun while Most are serious. One thing I did Not find was a single thread gathering your favorite idea. Do you have a favorite indicator? Favorite trading system? Do you use an EA? Which is the most consistantly favorable for you?

Hopefully this will turn into a "one stop" thread to compare experiences with various tools.

With a full time non-forex career to maintain I've tried to keep it simple. Recently I ran a backtest on the ADX. Set it up manually in Excel and found the results to be steady and positive. Lately running variations of this in an EA with mixed results.

Specifically playing with various line ups in multiple windows, like ST & 4-hr to establish the trend then using the 15 minute bar to catch any new move within a trend. Biggest issue is how to manage it during flat periods. Will report more as progress warrants.

What works for you?