I’ve never used AVS, so I can’t advise you there. However, Sony Vegas can export the files into just about any format, stitch them together, whatever you want to do, without losing quality. You can even control the bit rate of the output. Adobe Premeire can do it all, too, although it has a little bit higher learning curve.
For video editors, finding the perfect portable workstation is like catching a unicorn. It is no easy task to find the perfect balance of performance vs price point.
