I really, really like the look of these studio flashes, which have 600Ws (!!!) flash elements surrounded by an LED array:
http://www.lightingrumours.com/studi...direction-1153
The LEDs use less power and stay a lot cooler than traditional tungsten modelling lights. I think the only downside is that they probably wouldn't model accurately with some modifiers (e.g. honeycomb grids or snoots).
What do other strobists think?