Which opening datebases do you use?

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PureAeternus

I like this one

 

http://www.365chess.com/opening.php?m=6&n=1753&ms=e4.c5.c3.Nf6.d3&ns=3.3.37.65.1753

and

http://www.chessgames.com/perl/explorer

although that one only lets me see a few moves

are there any other good ones? and which one is the best