I ordered two of these in the B22 cap version as a (rather expensive) experiment! I have a lot of wall lights that only look any good with traditional 40 watt pearl golfball bulbs, which are becoming very difficult to get. I have therefore been looking for a long time for low energy equivalents. I had no success until I found these. They are nearly 10 times the price but they are the same size and shape and look excellent in my lights. The brightness is bit low (about 30 watt equivalent) and they are a little colder in colour, but are otherwise great. So if the manufacturers could boost them to 5 watts, bring the colour temperature down a little and, dare I say, also bring the price down a tad they would be perfect.