Mike, those connections should never fall apart. I know exactly what you mean though. The average combination/crimper tool can't generate enough force to properly crimp. Getting better terminals won't help unless you also have a good quality tool. If you invest in a good quality tool it will reduce the time needed to do electrical work considerably and you'll have confidence in those connections. They aren't cheap and I've had mine for a long time but I'm guessing 30$ would be ballpark.
I found some like the panduit pliers shown in the this thread, big difference in what I've been using, I knew ther had to be an answer to this, thanks Brian and everyone for the help.