Q. What's the best video editor?
A. I have used five...
Final Cut Pro Mac only $1300
Adobe Premiere Mac and PC $ 900
Avid Xpress Pro Mac and PC $1600
iMovie Mac only included with Mac OS
Windows Movie Maker Windows only included with XP and Vista
As you'd expect the free editors are extremely limited.
Final Cut Pro is the best choice if you're using a Mac.
Adobe Premiere integrates nicely with Adobe After Effects (special effects)
and Adobe Photoshop. There are also cheaper Adobe Premiere Elements
and Express versions.
Avid is used more in professional environments.
You can buy a device called the Avid Mojo ($1300) to accelerate
Avid. Which makes editing on a laptop practical.