I would say the big question is do you have (or are you planning to get) solar and/or batteries? If so you'll want a charger that works well with those. You don't want the car to be draining out your home battery or anything weird like that.
I went for the Givenergy EV charger as we already had givenergy solar inverter and battery so it all works from one app and no conflicts between anything.
It is probably not the cheapest, and not yet on Octopus Intelligent Go, but they are working on it.
Hypervolt and zappi are two others that offer solar divert.
If you don't/won't/can't have solar then you can choose based on price/aesthetics/app etc. Ohme seems popular and looks smart.