Which hotspot to buy is largely up to you, they are all very similar as the core technology is the same.
Some have different features e.g. outdoor enclosure / power of ethernet / antenna etc…
The main differentiator right now appears to be delivery time scales between vendors.
Before buying a hotspot you should ensure you are aware of the benefits and pitfalls of hosting a hotspot and also research each vendor and decide which hotspot is most suitable for you.