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

Don't try to act like you are some kind of genuine regular person raising your various purported nonsense concerns.
Likely the only reason that either sniveling or I respond to your nonsense is to help to clarify the presented matters to some degree in order to possibly lessen the likelihood that some actual innocent bystander genuine folks might get confused by your nonsense.
So, yeah, the truth of the matter is that we don't necessarily get direct upward price movements for extended periods of time without corrections and even price battles along the way. This whole $400 to $800 price range is decent for bitcoin if you zoom out a little bit and consider that prices were depressed in the $200s for nearly a year.
And, currently with the fairly convincing factual information in which we have experienced price movements much above and beyond $500 for about 5 weeks, and there have been several unsuccessful attempt to drive the price back down - even recall after we went above $600 on June 10, there has only been one 24 hour period after that on June 22 in which prices have been below $600... so yeah, the bears are having some difficulties getting BTC prices to go back down.
It would not be an impossible task to bring BTC prices back down below $600, but surely there is continuing upwards price pressures that are likely going to cause BTC prices to get to $780 before they get below $500.
Would you like to wager anything in the prospect regarding what is coming first? sub $500 or supra $780?