Another vote for a 240v TV and a low power inverter, because it could then be used in the house if required. Thats the set up I ran for many years in various motorhomes. If I wanted to do that in a caravan I would seriously consider a solar panel (100 watt minimum) in order to keep the LB charged up.
Personally I don't find TV to be an essential on acaravan. I do have one, but it very rarely gets used.
My current set up is an LG mains Smart TV, it comes with a transformer that reduces the current to the TV to 19 volts. So I bought a 12 -19v transformer so I can, if I want, use it whilst off grid (which so far has never happened as we tend to opt for EHU, but that could change if EHU costs get silly.
Avtex are, without doubt, very good bits of kit, but at a price I consider to be far too high for what it delivers, that being several hundred pounds more than the cost of my current set up.