Speakers for low power amps?

Hi, I am looking for suggestions for a high efficiency speaker. I am considering going to a low power SET setup. I really know nothing about it but I have always wanted to try out the low power amps. I figured I should start with speakers. What should I look for in speakers, just high DB rating? My room is about 14' x 22'. Where I live I have no stores that carry high end audio, so I will have to travel to hear anything. Any opinions?