I think it also depends on your application. I went with the soldered cables, but I wish I had gone with threaded connections and made my own cables. I'm installing in a van and I'm a little concerned that the solder connection could have issues with vibration where lugged/crimped terminals would offer more flex. Hopefully it will be fine. If I was doing a stationary install, I don't think there is any downside to solder connections, but it's still nice to size your own cables if you have the stuff to do it.