I have played the classical dragon for about 7 years. I have more good results than bad in tournaments I was able to play it. But I think the success was because I have weaker opponents. I have both Ward's book on the opening and I reckoned they are excellent. Unfortunately as I become stronger I decided to abandoned the classical dragon because it is not giving me consistent good results, I wanted to further minimize draws and defeats when I play against 1.e4 - and with classical dragon the control on the board to steer into preferred position is less. Aided by Fritz I was able to conclude that it is an opening not suited to my goal. I resorted to Accelerated Dragon, though games will not be as expectacular, atleast its got better handling of situations where black's position is safer.
Najdorf? Every strong players now know how to play against it. So why bother to be a beginner in that field?
Pelikan/Sveshnikov does not appeal to me. First, it is the only Sicilian where it surrenders a good endgame pawn structure. Every strong players are also well prepared to meet it. So why start building that house when its already raining and flooding? To play this opening you must be a very good attacking player, otherwise your initiatives will just steam-out and your clock always running out of time OTB.
I am currently looking at Sicilian Taimanov. So far I believe this is the safest Sicilan.
I recommend you get a copy of John Emm's Starting Out: The Sicilian and go through the various lines. The sample games are very helpful to give you the "feel" of each variation.