A big room? Efficient needed.
Horn speakers can be high priced based on your budget. I bought Crites. They require finishing(possible show stopper for some. Currently they are $2200 delivered. The speakers set up properly are very good sounding and 100 dB efficient.
I have seen these veneered and they are beautiful. Mine are clear coated Baltic Birch. My last speakers, unless I move to smaller place.