Power requirements are dictated by the listener not the speaker. Some are happy with wattage in single digits and some can never feel they are getting enough even if they have few hundreds of watts. If the manufacturer says 50-250 they are not wrong, this is the range they specify for the speaker for differnt listeners. It also depends on the demands the room puts on the power requirements, large rooms and longer distance from speakers will require you to have a little more power compared to small room where you are up close to the speakers.
A friend of mine uses Unision Research Integrated amp and is very happy with it.
A friend of mine uses Unision Research Integrated amp and is very happy with it.