On a slightly different tack, I'm impressed by the CFL floodlight from Aldi that I fitted for a neighbour. It's a good wash of white light without excessive glare and comes on immediately even in the winter. IIRC it's about 20 - 22W and the lamp isn't replacable. I don't know if bigger versions are available. Our local street lights have been replaced with CFLs and, along with the new luminaires, give a good spread of light without being dazzling.