"These lamps are brilliant (pun intended). The main lighting in my 5x3.5 metre kitchen was an array of eight 50W reflector lamps. These direct replacements are brighter, give better colour rendering (stronger blues), and, despite a nominally similar beam angle, the lighting is more uniform. They are expensive and give less light per watt than many others, but both of these are a consequence of good colour rendering. (Sylvania were the only supplier that I could find in an extensive internet survey who quoted a figure for this.) Payback time at current electricity prices is about 3000 hours: 3-4 years in my kitchen, and that does not allow for electricity price increases and the inevitable replacement reflector bulbs. I cannot assess reliability at this point, so I gave a neutral three stars for this."
"I have noticed that this very important information is missing. Lamp colour temperature is given as 3000k which is a bit too white for the living room - 2700 is better in my opinion as it is a warmer white. The CRI or Colour Rendering Index indicates how natural things look. It should be better than 85. 100 is the perfect value. I think customers should be aware of this as some led and cfl lamps are lousy in this respect and make colours just feel wrong, giving headaches from eye strain. Other suppliers do give this information - customers should take more notice."