I just used a pair of the Yamaha DXR10 speakers for an outside gig. They are rated at 1100w but that is a peak like mirza said. They sounded great and it was plenty of power for the event.
All the companies are playing the numbers game with their marketing strategy. QSC started it with the K series @ 1000w... Yamaha went with 1100w for the DXR and 1300w for the DSR line... then Line 6 introduced the SoundSource L3t at 1400w! Mackie has raised the number to 2000w and a new, innovative design with the science to back it up. The true test will be the ears. Are they made in China?!? In their own factory?!?
http://www.qscaudio.com/products/speakers/k_series/http://www.yamahaproaudio.com/global/en/products/speakers/dxr/index.jsphttp://www.yamahaproaudio.com/global/en/products/speakers/dsr_series/http://line6.com/stagesource-l3t/