Going by price alone is not a smart choice. I'd also be inclined to stick to one of the more known brands.
Some of these other ones as someone has mentioned, like to get you in cheap for the first year and then hike prices on the next term. That or decline you off after your first claim or some other reason.
Also read the PDS's.
Many insurers have been pinging EV's with higher rates than ICE cars due to claims costs and concerns with damaged batteries (they tend to write the cars off more). Expect turbulence with EV insurance rates.