My choice was between a Zappi and a Hypervolt - there are others around but these two (at the time) seemed to be popular for smart charging and incorporating solar. I'd heard that the Zappi was potentially having quality and supply issues as they were ramping up production - Hypervolt was getting a good name for customer service. I chose Hypervolt.
We have a Rolex unit supplied and fitted by Jorro Ltd from Glasgow. We’ve had it for about two years now and it works well for us. It is set to only charge during our ten hours off peak through the day and informs us on the app of all the details - when it’s charging- when it’s due to be ready - costs etc. plus we can over ride it on the app to charge anytime if we suddenly find we want the car sooner.
We have a rolec for nearly 2 years now never had any problems. Works well with the ev energy app. And Octopus Go tariff.
I believe both vehicles use the same type 2 cable for AC home charging, with the Leaf using CHAdeMO for Rapid DC charging. Could be wrong on that.I bought an untethered Zappi... Great interface and will be good with future plans to add a house battery and solar. The reason for untethered is because we may buy a Leaf for short trips and that enables us to swap between Chademo and the cable for the MG5. It also means we bought a longer 10m length cable so it doesn't matter which position on the drive the car is... even if one is parked behind the other.