AVI causes nothing but problems... more so in viewer compatibility issues.
Use MPEG2, that should solve a lot of your editing/rendering problems.
I've got Adobe Premier. Man what a difficult user interface!
Also have Roxio Media Creator 10. It's ok but no stabilization software... btw, there's a free add on to Premier for stabilization.
Lastly, I have Power Director 5. Its an older version but great stabilization software and awesome interface. For a budget program this is the one I would recommend. It does have a few glitches but I've read its gotten better with new releases and I also know how to work around them after 3 or 4 years of screaming at the computer when it was really me not understanding the program as best I could.
I can offer more suggestions or comments, just ask.