> If you can afford to use these connectors, you’ll also be able to afford to buy the appropriate tools to crimp them, even if only second hand – they are well worth it.

I've had a chance to use some well-maintained, calibrated crimp tools and there's a satisfaction that I can't quite describe. They feel substantial in the hand, the operation/sound are smooth and calming, and the resulting crimp will never fail. In my student days I had to improvise with whatever pliers or grippers were available. It was excruciating and the end product was barely serviceable.