One of the things I like about X-wing is that there isn't really one all-dominant build. Sure, there are clearly some that are stronger than others, but every build has a weakness.
What do YOU think is the most important aspect to the game (other than the obvious...FUN!)?
-maneuverability/positioning
-firepower
-shield/hull
-synergy between ships
-luck
-something else
I'm not an experienced player (I've played 2 games so far), but my observations so far are that maneuverability/positioning may be the most important. Regardless of what your opponent is flying, if you have the superior ability to position your ships, you seem to have the advantage. Granted, that's only 2 games worth of experience (and watching a couple), but even with turrets on the field, superior positioning seems to win the day.