[Al Skierkiewicz]

Greg,
The JST style you linked are used in equipment I work on everyday. They are good for small signal and DC or status. Most manufacturers will use different size connectors to avoid having assemblies plugged in to the wrong connector.
The other connectors you link I dislike for some very serious reasons. I have seen these appear on robots from time to time because the sellers claim high current specifications for these connectors. However, in real life, none of the specifications match the capabilities of the connectors. I have done some research into these connectors and the same connector is rated anywhere from 5 amps to 60 amps and none of the connectors carry a UL rating. The Anderson contacts are extensively tested by UL for continuous current over a 24 hour test period. The testing includes temperature rise, contact retention and series resistance measurements. Above all else, they are a positive locking connector where the others are not. Gold plating is not going to make them better especially when the gold breaks off the base metal.
My humble opinion.