I tested this kit from a friend and it works great even if it means to have a smartphone at hand.
But as this is not the first time lon mannonce very expensive bulbs (over 20 euros anyway, before this damortir in energy saving, there for a few years) who have a life expectancy greater than myself and died a few months while I'm still alive, I am cautious short, I will see what happens with my friend next time.
Because anyway, for now, for now, this kit does not fit me, are compatible as equivalent 60W bulbs which is too little for me and I'm afraid not so Belkin dampoule more powerful for reasons of reliabilities.
So if you tend to always be your smartphone beside you if 60W enough for you and if the price of bulbs you not reject, feel free, for you this is 5 *.
For another, I advise to stay "neutral", hence my rating of 3 * which mainly penalizes dune bulb replacement costs and, worse in my case, the low power of only one available.