What program do you use to create vectors?

I normally do photography and work in digital art. I thought about trying to do vectors. I currently use Paint Shop Pro X.





Vectors that are similar to these, if you scroll down you can see similar work:


http://www.istockphoto.com/file_closeup/...





What programs are designed to create vectors similar to the above?

What program do you use to create vectors?
That is, the link you provide, good vector art. Vector is graphics described in math numerics instead of dot-for-dot. Vector art is much smaller file size and capable of sharp visuals at any print size or resolution.





For the money, for the ease of production, and for better art -- Xara. The software has real time transparencies and gradiants.





I have used both Illustrator and Xara. You should click links, spend a moment or two looking at amazing art that looks photographic, but it is line art.





For a free Vector Art program that is very capable, Inkscape.
Reply:Adobe Illustrator is a very good vector editing program. Current versions of Photoshop can do limited vector drawing, which might be useful if you want to layer vectors on top of your photographs.
Reply:simple... Adobe Illustrator