I use a pertronix crimper kit. Excellent quality. Does a great job on spark plug wires. The only con is they have practically no instructions about the different jaws. You have to learn what things like open barrel terminals are. (the one shown in Art Newlands pictures)
Lifetime tool. I also use a micro torch for heat shrink.
http://www.pertronix.com/prod/new/details.aspx?ID=149
Costs $89 at Amazon
John