[Al Skierkiewicz]

To sum up the best of all the posts...
A good crimp made with the right tool on the connector the tool was designed to crimp for the right size wire, will be an excellent connection. Unfortunately, our teams are not using the same crimper with the correct connector for every wire and with non-automatic crimpers, the level of crimp depends on the forearm strength of the person doing the crimp. A soldered connection (when done properly) will fix most problems with the strip and crimp operation. Since, soldering requires a non-insulated connector, heatshrink is a must. The drawbacks with soldering are 1) a need to have a correctly sized and powered iron, 2) good mechanical contact 3) both the wire and connector need to be hot enough to melt solder, 4) and just enough solder applied to the joint that it doesn't wick up inside the wire and make the wire stiff and unmoving.