The LED lamp emits a very nice warm light, replacing a normal radiator lamp very well. The housing could be smaller - this problem but have obviously present that when we are still almost all LED lamps with E14 or E27 socket ... Maybe is better from the LED start time out. Then can also be seen whether the durability of the lamps justifies its price.
But what I want to deny is that this (or any other) 4W LED lamp a 40W bulb replaces equivalent. 30W I think is realistic. As long as you think about that in mind, the lamp is quite good.