1. Bright and pleasant light
2. Works with my dimmer
3. Lower part of the lamp is not too hot
4. Lamp not buzzing
5. The lamp lasts as long as indicated on the packaging
Actually, these are self-evident. My experience with three different dimmable LED lamps during the last year have shown that the points are probably not so easy to meet for manufacturers. Now to the Philipps-lamp:
Point 1 is (almost) fulfilled. The light is pleasant warm white and the brightness is equivalent to a 40 watt bulb. However, the lamp has the disadvantage of having to also transparent (not matte) conventional light bulbs: The ray of light is not uniform, that is, on our white dining table resulting from the transparent glass bulb light spots and patterns from the "filament", ie the LEDs. Even the lampshade (frosted glass) our table lamp gets a speckled pattern. That was in the two previous matt bulbs from Osram (Osram LED lamp Superstar Classic A60 10W - see my review from February 2014) and Müller light (Aldi offer from September 2014) better. But the Philips lamp looks very nice, almost like a real transparent light bulb with filament.
Point 2 is met 100%. The bulb does not work only with our rotary dimmer (with light switch, permanently installed) from GIRA, but amazingly, also with the electronic dimmer at our living room lamp (with 1-button control). That did not make the lamps from Osram and Müller light. They flickered only during dimming with electronic dimmer. Here is a great advantage of the Philips bulb for me.
Point 3 is also fulfilled to 100%. The bulb is indeed below warm, but not extremely hot. The copy of Müller-Licht was hardly warm, the bulb from Osram was so hot that the plastic socket of our hanging lamp started to smell of charred plastic (also why I have the Osram bulb returned).
Point 4 is critical. The Müller Light Bulb has been no noise, that was from Osram as loud during dimming down, that it was disturbing when reading etc., even despite 5 meters. The Philips bulb also hums a little, interestingly enough, the loudest in bright light and dims quieter. I think the sound just about ok, it does not bother me so far. For sensitive ears that could however be an issue.
Point 5 I can not judge. The Müller-pear has just four months by retained (which was the reason for buying the Philips bulb). I'm curious how long does the bulb and will add my review if necessary.
All in all, I recommend the pear by Philips with the above restrictions, therefore four stars.