Re: crimp on connectors. For a few years I assembled switching components for aerospace/military use. In any application, as in a wiring harness, where high reliability is needed, and the wires are subject to strain or flex, crimp connectors are used, not solder. When you solder a wire, it becomes inflexible and rigid where there is solder. This is good for components soldered to a pc board because you want them to stay put
and there's no pulling or flexing force on them. This is NOT good for a wire connection, especially for a heavier gauge wire like from a transformer. It's better to get a proper crimping tool, made for the type connector you are using and crimp it properly, than to solder the wire in the connector. A soldered wire in a crimp connector will break more easily.A crimp connector is NOT an attempt to be cheap.
By the way, the quality of work and design in the MTS series is excellent,
based on my experience with the work I did.
Hope this helps! Pat L.