None of those will work for servo leads. Here are the two I know of, you will need pins and connectors as well.

Cheap option: some people don't care for this tool, but I find it to work just fine.

http://www.hansenhobbies.com/products/connectors/tools/crimp_ec/

More expensive option: these crimpers ratchet down and will not open until the crimp is completed. I have a pair of these for larger connectors and they work very well.

http://www.hansenhobbies.com/products/connectors/tools/crimp_dx/