I use vegas because it's actually pretty good and easy on a professional and amateur level, and you can do effects within the program, without stepping into After Effects at all. next to Avid xpress it's what i prefer.
I don't like Premiere at all, it's not as simple as it should be, and I've tested every version since 4.9. after effects isn't simple either for newbies with all the compositing you have to do.
If you have a chance, vegas' demo which i believe is a month trial with save options and check out avid Free, which is free on avid.com.
Windows Movie Maker. yeargh