I've worked with and around a fair amount of connectors in a commercial environment and when you see something like a TV station built with a pantload of BNC's that are 100% crimped, you have to wonder.......... Is it cost efficiency, reliability, or signal quality that made the decision?
Hands down it's convenience and cost efficiency because using a soldering iron behind a poorly lit rack is not the hot tip for a textbook perfect connection. But, as for signal quality, I've seen plenty of 20+ year old crimped cables that work as good as new. Which is another form of cost efficiency. Downtime is money lost and re-cabling doesn't come cheap so if there were reliability issues with crimped connectors you wouldn't see them at the big money operators. When you realize how demanding an RGB (Triax) video system is on signal balance you stop worrying about how good a crimped connection might be because if anything would test the value of a cable, that's it. Seeing a good signal on one cable is a good thing but it's quite another to manage three in parallel that are matched for impedance, loss and length.
Let's just say it is possible to do a bad crimp job just like it's possible to do a bad solder job, but in my experience a bad solder job is more likely. Especially if you do connectors only occasionally.Note to AD6KA:
Yeah, you can buy the crimper frame alone then add the dies you need. You will pay more per piece as compared to a bundled kit, but avoid buying something you may never use. So the consideration is between thrift and convenience. Buy the kit and you're covered both now and in the future. Maybe.
Some crimpers have a combo die like this: http://www.molex.com/molex/products/family?key=coax_crimp_tool&channel=products&pageTitle=Introduction&parentKey=rf_microwave_coax_connectors
Others use one die per connector size: http://www.amphenolconnex.com/rf-coaxial-crimp-tooling-selection-guide
I think the Molex option looks about right for the typical Ham / hobbyist situation..............................