A brief general description:
single coils: Are brighter in tone I guess but have a little hum (that could turn big with high distortion). Just think of famous strat players and their sounds, Hendrix, S.R.V., Eric Johnson, Eric Clapton...
humbuckers: less hum but not as bright. Almost all heavy metal and hard rock use these. Think of famous Les Paul players and their sounds: Slash, Jimmy Page, Angus Young, Zakk Wylde...
Like I said neither is better than the other really, until you decide how you want to play.
[FONT=Palatino Linotype]"Bust a nut!" - Dimebag
"Imagination is more important than knowledge." - Einstein[/FONT]
"Imagination is more important than knowledge." - Einstein[/FONT]