Yes! Sony Vegas is a good program for editing movies. I have bought this program during Christmas. I had trials for Adobe Premier, Corel Video Studio, and Sony Vegas. In the end I chose Vegas. My school has bought Corel Video Studio and it was not a good decision. I say get Sony Vegas.
Adobe After Effects is not quite the same as Sony Vegas Pro. A better comparison would be sony vegas and adobe premiere. After Effects is for doing short VFX in it, and sony vegas and premiere are for editing a clip.