Upfront I've got a Cygolite 250. I don't ride fast, and it's plenty bright for me. I also use a Planet Bike 2 watt as a flasher. The latter is inadequate as a single light source for me even at my slow speeds.

On the back I've got a Planet Bike super flash on one bike and a Portland Design works RAdbot 1000 on the other. Both work well. Also have a Planet Bike blinky on the back of my helmet.