What are some alternatives?
When comparing R2V and RasterVect, you can also consider the following products
CR8tracer - Convert bitmap images into monochrome vector formats
Wintopo - High quality raster to vector conversion tool
Autotracer.org - Free online image vectorizer
KVEC - Tool which can vectorize images using several graphic formats
Ras2Vec - Raster to vector conversion program for Windows 95/98/NT
LineTracer - Tool for converting scanned hand-drawn sketches to vector format