Hmmm.... I can understand the arguments for carrying very heavy lights on a race bike, but I'm not quite convinced. I actually have a Cateye ABS system (10W + 20W) for offroad MTB. It weighs a ton, the 20W spot is IMO *too* bright for road use, and I often ride for longer than the battery life anyway.
The ViewPoint Flare looks excellent, thanks for the recommendation. But I'm in the UK and no-one seems to stock it here. Do you know where I might be able to get it? I guess I could try and get it shipped from performancebike.com, but then there's hassles with postage, import tax etc.