The advantage of the two bishops (when facing a bishop and knight or two knights) is a favorite of many masters. When working together, the two bishops can really dominate the chessboard.
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[Event "rated untimed match"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Unknown"]
[Black "Unknown11"]
[Result "0-1"]
[Annotator "David Hayes"]
[BlackElo "0"]
[FEN "4Br2/q5pQ/p3kr1p/1p1n3P/8/1NP5/PP3BP1/5RK1 b - - 0 1"]
[SetUp "1"]
[TimeControl "0"]
[WhiteElo "0"]
1... Rxf2 2. Nd4+ Qxd4 { The queen picks up a second piece in what will
become many minor pieces in exchange for the queen. } 3. Re1+ Re2+ 4. cxd4 Rxe1+ 5. Kh2 Rxe8 6. Qg6+ Nf6 7. Qxg7 { Black wins with a large material
advantage. } 0-1