Difference in daily candles

I was wondering if anyone knows, which type of candles are most commonly used for analysis? Some data feeds start a new daily candle at midnight U.S. eastern time, while others start a new daily candle at New York close, 5pm eastern time I'm assuming. Does one hold more importance than the other? I've noticed that you will get signals on one but not the other, for example, the recent bullish action on EUR/USD was preceded by a hammer on the daily chart, depending on which data feed you're using. It also affects the 4 hour charts since the first 4 hour candle of the day will start at a different hour, and subsequently affect the rest of the 4 hour candles. See below daily charts of EUR/USD.

Oanda's data feed, new daily candle forms at midnight U.S. eastern time.
http://i71.photobucket.com/albums/i1...DailyOanda.png

FxPro's data feed, new daily candle forms at New York close.
http://i71.photobucket.com/albums/i1...EUDailyMT4.png

Standard MetaTrader (the one you get off the MetaTrader website)
http://i71.photobucket.com/albums/i1...DailyFxPro.png

So, thoughts? Opinions? Wisdom?

Much appreciated.

I read some articles suggested to use the NY close on Daily candlestick for PA/TA analysts. Reason it is the time when the Wall Street closed.

The H1 will display "slightly" different hourly candlesticks from one broker to other. But H4 would display "more" different. The overall contexts of either H1/H4 or both should give one the sign of trend.

also due to broker have different source of price of data, but make different too.

like one broker always way behind the other or is 2 pip below the other broker price.