http://www.edbpriser.dk/Product/Details.aspx?pid=4728486
I'm looking at one of the mid range sync masters. Very low power consumption, LED backlit, at 29 watt maximum, the lowest I have seen in any of the 27" i have browsed.
2 ms response time, which should be plenty fast. 1920 x 1080. The jump to 2560 x 1440 is quite an expensive one, so it will have to do.