I don't install them daily, but have had a Hypervolt, Zappi 2.1 and now Ohme Home Pro installed here. The Zappi replaced a 1-month old Hypervolt which was fraught with continual issues and we've recently added the Ohme as a second charger to enable us to switch to Octopus Intelligent. No issues with it whatsoever.. tell it how much charge the car needs (no API) and it charges it, determining Intelligent slots when appropriate... problem free. Really simple installation too as it's a self-contained charger with integrated sim card for comms. No need to connect to wifi etc.
The Zappi's also worth a look if good solar integration is worth it to you. The Ohme will "do" solar charging, but is a clunky process at the moment... proper support is apparently coming at some point but it's not there yet. Similar, Myenergi have been promising Octopus Intelligent support on the Zappi for a long time now.. seems to have been on a rolling "coming next month" since last year, which is what led us to giving up waiting and fitting an Ohme.
