I have been using this crimper from Napa for years. Part #: NW 726603 It is very versatile, and with a little practice you will get good results. I like to solder the connection as well. I crimp the wire first, then solder, and finally crimp the insulation end of the connector. Be aware that you only want to solder the very tip of the wire to the connector. If the solder runs down the wire into the insulation it makes the wire prone to cracking.