tbh, inverters nowadays are no more durable, if you search on different forums, this thread, voice of customer FB, youtube reviews, for every inverter, there are multiple issues reported, at the end, I made up my mind to cope with everything, PCB issue, evaporator leaks etc, these are too common, rest is your luck, there might be a leak in 2 months, or no leak or PCB issue in 5+ years
almost all high end variants are 3dc/5dc and efficient, efficiency is not a concern unless you're going for non-inverter or 1dc inverter
brands are subjective, pick one accordingly