What connectors are best?

[AndreyS]

I'm not sure whether I've picked right subforum for this thread, sorry if not 

The question is not about a manufacturer. What type of the connectors are most superior?
The upper left contestant is WST I39601BS-2.
The bottom right is JST SVH-21T-P1.1.

In my opinion the bottom one is better because it touches the pin on both sides and the tension is not relying on plastic connector.
What are your thoughts? Any even better connector?

[jpanhalt]

I prefer a contact that has a spring action.  Examples are the "Berg" (see: https://en.wikipedia.org/wiki/Berg_connector)* and Tiger Eye discrete types.  This link shows the latter version vs. tuning fork.  Tiger Buy is a "tuning fork" contact, which can easily be spread and loosens with multiple insertions.

https://www.samtec.com/contact-systems/

One thing to look for is contact "insertion cycles."  That number can vary from a relative few (e.g., 10 to 40) to thousands as one finds with USB connectors. Unfortunately, one often has to do a lot of digging to find that specification for a particular connector.

The other problem, as you have probably, found is the huge number of connector types.

*Berg connectors (female connector) are commonly used for hobby servos.

EDIT: Here's another link to the Berg type: https://www.connectortips.com/breakthrough-contact-design-spawned-500m-connector-company/

[Kjelt]

It all depends on the purpose of the connector, the amount of amps and isolation (volts) it should be able to handle.
For the best connectors I always look at examples in the industrial world and space / military applications.

There you can find connectors that are way too expensive or even unusable for hobby since it requires special equipment to crimp and mount/dismount the connectors.
The connectors you give as an example are made for as cheap as possible with reasonable quality.
A cheaper simple boxheader connector would also suffice for those purposes.