Think Hive uses that back plate. However the question is what boiler and control do you want?
Anaguloge is better than digital, but not all boilers allow anaguloge control, most popular a anaguloge is OpenTherm.
Digital can work well, but for an oil boiler likely you want a thermostat with anti hysteresis software to stop over shoot, but with a modulating gas boiler that is the last thing you want
Often all the thermostat does is stop boiler cycling when we get warm weather, the TRV sets room temperature, but that is not always the case.
There is no one thermostat will do all, each has plus and minus points.
EPH work as master/slave great for OpenTherm boiler and zone valves, but does not link to TRV heads, each as said plus and minus.
Hive wall thermostat can work like a hub each TRV tells the thermostat when to turn on boiler. Thermostat is cheap but TRV is expensive.
I have found a cheap programmable hard wired wall thermostat around £35 and cheap programmable TRV heads £10 can do nearly the same job as most expensive system, but down to your house.
If you look as Honeywell EvoHome it has been going for a long time and it is unlikely to have problems, but not cheap and it is old, but in the main it is the rest of smart devices which you also look at.
I have not got the best, but if I say how I did it, maybe you can make sure you don't make same errors.
It started with an alarm to tell me when mother had gone on wheel about, wanted to turn off socket with remote and with time, so Energenie socket, followed with light switch then 4 TRV heads and because it was claimed to work with Nest and the heat link connects to thermostat with 2 wires got Nest gen 3, and the Nest Mini's.
Once you buy the hub, makes sense to keep to same system. So what do you want your system to do.