Bought this light to replace a 400W Halogen that was faulty, I was happy to pay more for something that may last longer and had the 5yr warranty. The light looks quite sturdy in design and looks like it will last a while; it does seem quite large for a 500W replacement and I was a bit concerned that it was going to be too bright for my needs. The cable is way too short at 0.5m and needs to be at least another 1m long; I had to install a junction box near mine. The holes and slots in the bracket are too big at 10mm (6mm or 8mm would suffice) and means that modifications or fresh holes are needed in any mounting brackets or need drilling into any walls. When fitting the separate PIR I found that the socket in the light had been tightened up in such a position that I could not get the sensor to point in a forward direction (the most common position) I did eventually manage to get it roughly pointing in the right direction. Setting the light up took quite a while as the sensor is very sensitive to other light sources and wouldn't come on when required; I had to keep turning the light setting towards daylight to achieve the results I wanted. Once working the light output is adequate but I would say not as good as the 400W halogen which it replaced and I was expecting it to be too bright at 500W. If it wasn't for the sturdy nature of the product and the long warranty I would probably be asking for a refund.