I agree with both Dan and Tony I used to have problems with my crimp joints because I was using the wrong connectors and I was trying to crimp them with a pair of vicegrips. I also used to have a lot of problems with my solder joints until I learned how to solder properly and properly apply the heatshrink tubing, which helps keep the joints from being stressed in ways that can cause them to break. The reality is that both methods can be very bad or very good. It all depends on having the proper tools and experience to get good solid connections.