start worrying if the price goes below $400 and especially if it stays below $400 for any significant period of time..
Anything above $500 is bullish because it's only a little over a month ago that the price went above $500 for the second time since September 2014.
Exactly! We're probably going into 500s, but I'm OK with that

You gentlemen completely restored my confidence; now I'm not worried at all
