The brighter bulbs very often do give more light but have two disadvantages. The first on is the price. De second problem is that they don't last long. I used to always buy Philips bulbs ansd still have them fitted in the car but they need replacing every year and I am not using my lights all the time. This is normal as I have checked this with Philips. I use the night guide Bulbs. So check with Osram how many hours they last.
Philips tests the bulbs at a lower voltage as the voltage we get over the battery. And when it is around 14,4 Volts the bulbs last a lot shorter again.