OT: Mac Users/Video Editors?

So, I finally figured out the trick to downloading videos off YouTube using the Safari activity function. It automatically saves them to .flv files... I was wondering if anyone knew the best program to use for piecing parts together? (Its a 10 part video.)
Encore?
Toast?
AfterEffects?
PremierePro?
I have the Adobe CS4 Master Collection and Toast Titanium. I know I need to convert to .avi files to get them to play in a DVD player, and I can design my own menu with an auto run. Just need to know how to glue the puzzle together.
Any advice?
Encore?
Toast?
AfterEffects?
PremierePro?
I have the Adobe CS4 Master Collection and Toast Titanium. I know I need to convert to .avi files to get them to play in a DVD player, and I can design my own menu with an auto run. Just need to know how to glue the puzzle together.
Any advice?