I use the bulbs in the office, therefore bothers me somewhat lighter / colder not know. The bulb replace 28W lamps, direct its 3W but much brighter! In terms of size, no difference to the previously used halogen bulbs. With halogen lamps you have a spotlight effect, you can virtually illuminate a point. This effect does not occur as in the LED bulbs, which I welcome. However you want precisely illuminate a point z. B. an image, one should not buy any equal a 10-pack and then complain disappointed but try it more times with a bulb.
Therefore, for me definitely 5 star.
The price of around 4.50 per bulb is m. E. However, too high. I think here is making money on the buyer's extra energy saving will. Because I have known it but before and have ordered anyway, there's also no deduction. You do not have to buy the expensive lamps yes.