I'm in the same boat. Now that I got my car running it's time to shorten some wires and clean things up.
I generally prefer uninsulated terminals with shrink tube. But I have recently found that McMaster Carr supplied nice shrink tube insulated terminals.
So here are two crimpers from Hella. I figure Hella must know how to make a crimp tool but I have no experience with it. the insulated one is $100 and the uninsulated one is $130.
But after seeing that one from JEGS I'm almost sold.
http://www.rallylights.com/detail.aspx?ID=439