I bought 6 Mirrorstone floodlights (a mix of 30W and 50W, and one 75W) to replace 6 underpowered halogen lights around our house. My electrician installed them 2 days ago and they have exceeded my expectations in terms of build quality and the depth and penetration of the brilliant white LEDs. The 75W floodlight extends enough light to a boundary some 60 metres away. Two of the floodlights have built in PIRs - varying the light level at which they come on, and the time they stay on once activated, is so easy even I managed it. I will now be buying more Mirrorstone floodlights for my next project of lighting up some of the large trees in out garden - those will be the colour-changing type.