The biggest complaint with Evans' wiring is bad crimps. If you are going to buy any wiring harnesses from any vendor, make sure you do a pull test on all the crimped connectors. If you are afraid of pulling the connectors off, you should be more concerned that they might cause a fire if they are loose. If you run across a marginal crimp, you can always solder the crimped wire.

Note: M&H does the above when they make the harness and it is part of their assembly process.

You should also check the connectors and make sure they fit tightly together. You can do this with a separate test male connector. Just take your test connector and plug it into each female connector and make sure that all the connectors are a snug fit. If any are loose, you can squeeze the contacts closed with a pair of pliers.