The ones in 1368 look better.
Osram bulbs are fine. Audi use Philips at the factory, but Osram are the OE supplier for various other marques.
Buying discharge lamps from a name brand (Philips, Osram, GE or Toshiba) is recommended (note that the main suppliers of D3S bulbs are Philips and Osram).
Be wary of buying cheap or off-brands; the quality is often very poor. I tried a few sets on an old car (at £25 a pair, compared to £60 each, it was worth a short), and they were invariably rubbish - the longest I got was 12 months, most died within about 6 months, and they were noticeably dimmer than a genuine set of Philips bulbs.
Finally, be careful if you are buying these yourself. Fakes are rampant. This is such a problem, that manufacturers give detailed instructions on how to spot counterfeits.