What is the best video editing software for a mac?

What should i use to have the most functionality? What should i use for the most effects ( example: lightsaber effects )?
Should I use iMovie, Final Cut Express, or Adobe After Affects?

If you are new to video editing software imovie
if you know your way around computers
final cut pro or express is the way to go

I actually have both
but I never use after effects anymore
FCP is faster, easier, built for mac only so it integrates better with the rest of your system, and they both have the same effects

only thing, the light-saber effect, which is just moving a solid glowing mass is a bit easier an AE but that’s your only down side

Adobe Premiere elements(4 , 7, or – How to make a lightsaber effect